I've been on various BCP for almost 10 years now (was diagnosed with dysmenorrhea and menoragia). The last year and a half have been on Yaz. I've had extreme fatigue (to the point where I was thinking I had fibromyalgia or CFS) for almost that entire 10 years. My blood tests always came back perfectly fine (no anemia, no thyroid problems; which at that point doctors did not want to deal with me any more and would try to through it off as depression). I've also almost constantly had stomach pain, not severe, but nagging and am nausiated most of the time.
My doctor switched me to Yaz in order to help stop the hormonal migraines, terrible mood swings, and increasingly bad periods (bleeding and cramp wise), and dizziness (that had come on within the past 2 months) that the Mircette was giving me. At first I felt relief (mostly in the dizziness, mood swings and migraines, but not from the fatigue or stomach aches). Increasingly though the migraines have progressed to where I now get them for 2-3 days before my period and 2-3 days after my period. Skipping the period does nothing because 2 days after starting a new pack I get a migraine (my doctor tells me that all the pills are the same except the last few, but it has happened multiple times now, so something must be different).
After a conversation I had with a friend who noticed that her fatigue would lift while she was menstruating and said that her doctor had said that this was because of the break in hormones (and not having put two in two together that those were the only times I wasn't fatigued either), I've decided that I have had it with birth control pills and am going to see if my older body will now work without them. I recommend to anyone who does not need birth control pills for a severe medical condition to NOT use them. They mess up your body.