Mystery illnesses symptoms and conditions

I'm still trying to find out if my symptoms are associated with Yasmin, but I STRONGLY believe they are. I can't believe I didn't pu the pieces together sooner. I've been on Yasmin close to 4 years... it was pretty new when I started taking it for my PCOS. For the last two years (yes, two years!) I've been experiencing extreme nausea and upset stomach and my resistance to illness/allergies has been non-existent. I've noticed that I feel depressed and lack a lot of energy. My sex drive wanes... sometimes it's nill and other times I can't get enough. I've had endoscopies, colonoscopies, blood work, etc... but nothing ever came back conclusive on anything particular. After my last cycle, it took me about a week to get my new pack and guess what? I felt somewhat normal! My sex drive came back and my gastrointestinal issues subsided. I'm going to stop taking it completely and see if it solves my "mystery illnesses".