Okay. I need some advice. Has anyone else had really messed up periods since surgery? I'm on Yaz (generic form) and it usually only lasts 3-4 days, sometimes only 2, but this past week, I had it Mon-Wed and then it came back heavy on Thursday, had to leave because of cramps/headache/nausea/dizziness. Then it came back again today around 11am. WTF???