Fertility awareness methods (FAM) vs Hormonal coil (IUS)

I've had an entirely positive experience using Natural Cycles. While using the impant I was struggling with acne, mood swings, irregular periods. And since swapping to use Natural Cycles I've felt much better in myself, my periods are very regular, I feel I understand my body and cycle so much more, and my skin has cleared up. In 5 years of using it it's been 100% effective at preventing pregnancy, I'm very careful to measure consistently, and I use the Oura Ring to help get accurate readings. But this small effort seems like a small price to pay in exchange for getting rid of all the nasty side effects of my previous contraception

I started using Natural Cycles a few years back. I was never on any birth control as a teenager as my mum didn't want my young body being put on hormones. However, once I settled down with my current long-term partner, I wanted to have the peace of mind that I wasn't going to fall pregnant. The first few years of using Natural Cycles were great and empowering, understanding the changes in my body and knowing when I had ovulated was great. What I had failed to understand was it predicted with its algorithm your date of next month's ovulation based on your previous month. Well. I managed to fall pregnant not once, but twice in the space of 8 months. The first time around, I thought it was my fault and I had not taken my temps properly (even though I never had an issue in the past). I had a surgical abortion as I was 3 months pregnant before I actually found out. I was willing to try again and really get to grips with it even though the clinic was very strongly advising me to go on some form of HBC. In the past 6 months, my body has recovered from the abortion and got back into its usual swing of periods and I saw I was ovulating again. This time around I invested in an Oura ring to pair with my NC app to be certain of my temps being taken. All was well, I stuck to my green and red days religiously. I use the pull-out method on red days (if we do have sex). And I trust our pull-out method completely because we definitely know he does not ejaculate inside of me or we tend to stick to oral sex rather than penetrative. I noticed my temperatures lately had been higher than usual and my ovulation was confirmed a bit earlier than usual. I didn't think much of it as I had stuck to our red days and green days as shown. When I went on calendar view, I saw that my fertile window just gone was a lot shorter than 6 days and I had unprotected sex (on a green day) that was 2 days before I ovulated. I did a test and indeed am pregnant yet again. I contacted NC straight away and got them to go through my data, which they did and have taken full responsibility for the muck up with their algorithm. I advise you to check your fertile windows and note any other observations (cervical mucus), because the algorithm cannot be trusted. And from what I now know, ovulation may change throughout different cycles (stress, sleep etc). I will no longer be using them ever again which is sad as I did so enjoy using it.

Amazing

I love this coil! I was keen to have a copper coil initially but as I already had quite painful periods I was advised against this and I love the Jaydess! Initially I had some spotting after insertion but my period / ovulation dates are the same (I was tracking my cycles before) the only difference now is that my periods are lighter and a bit longer than they were previously (before they were 3 days and now about 5-7 days but about 2 or 3 of those is just spotting). They are also generally less painful (although the pains feel different - more like the deep cramps you get when the coil is inserted rather than my old period pains). I really like this coil and it is very low hormone so haven't really noticed much in the way of hormonal side effects - my boobs get a bit more tender pre period and I think I might have had like one more spot than is usual for me but that also might be diet related! I haven't noticed any bloating or weight change! It's really really good and I reccomend it!

I had mirena fitted on 8/1/25. Insertion was absolutely fine, didn't feel anything at all. Since mirena fitted I was lightly bleeding for 3 weeks. Than stopped for 3 days and than I had my period(on time) so started again. Period is much lighter ( 1 pad a day) no cramps, or any other sides effects. Hopefully it will settle soon with my body if not and I will still bleeding or spotting I will go to remove it because I can compare a few days with periods then constantly bleeding or spotting. I feel absolutely fine.

Best one yet for me. I used to have mirena but thought hormones made me depressed. Especially when initially inserted. So opted for lower does coil as love it and I do feel better with it.

I really struggled to come to terms with removing the copper coil as it was the best option for me after having my first child and realising how much I’d changed with hormonal contraception however, after 18 months the copper coil just didn’t agree with me causing periods that were so heavy I’d soak through the biggest tampon you could get within an hour. My periods would also last 8-10 days and be so painful, it stopped me from being able to look after my little girl properly.

I have endometriosis and I tried so many different pills, the kyleena IUD too. All with very bad side effects. This is the first solution that is making my life a bit better than anything else. Overall, my daily life has improved versus no hormone solution , but I do struggle quite a bit with bad lower back pain and also bloating . But it’s still better than any other solution I’ve tried ..

Overall I am really happy with my Mirena coil. Only thing I really wanted to note was that my periods did initially stop completely but they have started coming back after about 2.5/3 years of having it. Although they are much lighter than before I have the coil it was something I wasnt expecting. I think its because the hormones from the coil are slightly weaker than when it first went in, so right now its enough against pregnancy but not enough against my periods (is my thinking). anyways other than that i love it. I dont think it affects my moods as much as the pill etc because the hormones are really localised to the uterus area rather than being all of my bloodstream, as such, i believe its a lot less hormones too than for the pill .

In the beginning for the first few months I had breakthrough bleeding. Then it’s settled and my periods became regular. I kept Kyleena in for the full 5 years and found this method of contraception easy as didn’t involve remembering to take anything. My periods were between 5-6 days long - I still had cramps which I managed with heat and painkillers. This method gives you the peace of mind that you are protected against falling pregnant. I would recommend.

Worsened eczema, dry skin, overly sensitive skin

minimal side affects comparted to my experience on the combined pill

I had such high hopes for the Mirena to help with my heavy periods but sadly I'm nearing the six month mark and there has been no improvement in the long term, if anything my periods are worse and I can't find any reason online as to why. I couldn't put up with the monthly flooding any longer and the NHS waiting list was at least 12 months, so I paid privately for the Mirena to be fitted. The insertion was uncomfortable but bearable (I haven't had children) and I didn't experience any discomfort immediately afterwards. The cramps during menstruation in the first two months following the fitting were intense, but the period was lighter so it still seemed like a win overall and I remained hopeful the cramps would ease as my body got used to the coil. That has happened and the cramps have eased to next to nothing now, but strangely my periods after the three month mark have been horrendous. I've been losing clots bigger than I have experienced before and I am back in incontinence pads to manage the amount of blood I lose. I can't continue to afford to access private care and I remain on the NHS waiting list, where I guess I will discuss ablation when I finally reach the top of the list. I so wish this had worked for me because it seemed an easy option and importantly it didn't end my fertility, but sadly it wasn't to be. I don't know why I'm surprised it didn't work for me, this is just my luck!! I wish it hadn't cost me hundreds of pounds to find this out, but for those it works for it seems life changing so it very much felt like an avenue worth exploring.