Desogestrel pill and lighter periods

I was prescribed generic Desogestrel mini pill to treat my adenomyosis. I was only on it for a couple of weeks, but I couldn't cope with the symptoms. Daily bleeding and bloating but more worryingly, horrendous nausea, dizziness and migraines. Also had swollen tender enlarged breasts.

I started taking the minipill about 6 months ago because of my really heavy and painful periods. And the first three months I still had my period, but it did get a lot lighter and less painful. The last 3 months I've had no period except for a week of spotting. My mood has become more stable, I used to become almost depressed before my period. I do however become nauseaus a lot faster especially if I'm stressed, I have lost 5 kg almost because of that. I don't think this is the best contraceptive, but I do like that it only contains one type of hormone and that I don't have my period anymore. But I'm not planning on taking it for a very long time.

I had to switch from the combined pill to the mini pill following a bought of migraines with aura. At first, it was great - I didn’t get periods, I felt good, I wasn’t worried about strokes etc. However, after around 6 months of my body getting used to it, my periods came back, extremely irregular (I.e. 3 periods in one month), my mood and mental health had significantly declined, and my skin is absolutely terrible.