Desogestrel pill and irregular periods

i’m not sure if it is normal but i have been on this pill for 3 months. a week into the taking the pill my period finally came back after around 100 days. since then ive had very irregular periods often bleeding for extended periods of time and also spotting more often with the periods being closer together. i have also experienced much more mood changes as i have felt somewhat more depressed on this pill. this might just be my experience and might also be influenced by the fact i am still going through pubity as i’m 16 yet i still can’t stop thinking that something is wrong .

I’m was happy with the mini pill as I took it while breastfeeding my son, however as soon as I weaned him my periods came back but they were all over the place. I bled for nearly 2 weeks straight then it finally stopped, but only for 3 days then it started again. If it wasn’t for this issue I’d have kept using the mini pill but I couldn’t deal with it anymore as it was preventing me from living my life normally

Switched eventually to an implant because of having to remember to bring them everywhere each day. Overall a positive experience though - a reduction in headaches, and usually say it 'flattened' my mood. Whereas before there would be some very low mood points in my cycle, this greatly reduced those. Sometimes it felt a little dull as it seemed to also reduce some of the good spikes, but this was worth it to me to not have to deal with such mood swings.