Progestogen-only / Mini pill and vaginal dryness

I'm 40 and originally was prescribed Desogestrel to tackle severe period pain which was requiring me to take strong painkillers 3-4 days a month, making me wake up in pain in the night and stopping me exercising/walking the dog during those days as I was in such intense pain. The first two months I experienced pretty bad acne which has since settled down a bit but I definitely have spots throughout the month now which I didn't previously. The pill certainly helped reduce my period pain to a manageable amount but has just led to really irregular periods... frequently I'd have nothing for 5-6 weeks, then suddenly a 2-3 week long period! It's also really killed my sex drive. So some good (less pain) but lots of negatives too.

Since starting this pill after changing from Yasmin my hair has been thinner, I have more hair loss, increased oily skin and acne and I've been noticing palpitations I don't know if this has happened to anyone else but I've been experiencing chest pain all over, and I notice when I stopped taking it for a few weeks that chest went away but I'm back on it again and the chest pain came back. It may not be related but it's something new for me being on this pill. Other than that it's not been horrible I haven't had as much cramping on this pill as I did with Yasmin and I don't get debilitating headaches either.

I got this pill after being 25 years on Yasmin but started to get headaches and turned 40 so was made to switch to Desogestrel. I didn't get headaches but everything else just got bad, was told to stay on it 6 months to get adjusted but after 5 and half months I finish the pack half way as I was getting really frustrated with it all. The side effects have been horrible - oily skin, scalp and nails, acne, hair loss and hair thinning, random spotting and I gained 15kg, I have never been so huge! I just hope all will return to normal soon as it's been very depressing.