Question: I am a 48-year-old woman with a history of polycystic ovarian syndrome and irregular periods. I also am treated for hypothyroidism. Back in 2006, my GYN put me on Lo Ovral (generic Cryselle 28) for breakthrough bleeding. Everything was fine (I even had months at a time when I didn't have a period) until July of this year when it became impossible to get Cryselle anymore and I was switched to Lo Ogestrel 28. I started having heavier periods that were longer. Then last month, I was under a lot of stress and I skipped my period all together. I am now in week three of my active pills and last night I started bleeding (lightly) and having cramps. I also am bloated. I called my GYN this morning and the nurse said to finish the pill pack (take the last two pills) and then start the new one next Sunday after my period and everything should be fine. She said it was all stress-related breakthrough bleeding, plus the switch to the Lo Ogestrel.
I should mention that I have lost 60 pounds since XXXXXXX due to being on a low carb diet and exercise. Does this have anything to do with the breakthrough bleeding?
I am worried about this bleeding and would like another opinion.

I thought I would only experience breakthrough bleeding for three months after the change in pills, and it's been five months since I switched generics for the Lo Ovral. Plus, I thought that since the Lo Ogestrel had the same active ingredients as the Cryselle that I would have no problem with it. So even a switch between generics of the same brand name drug could cause this sort of bleeding? And bleeding that occurs five months after switching generics is normal?