I was on Yaz a few years ago, and decided to stop because I was no longer sexually active. However I just went back on, and within a week on the pack I started experiencing these weird headaches, next to the irregular bleeding, cramping, and fatigue like symptoms. I know that the bleeding is supposedly normal, however the headaches/migraines felt worse than my usual caffeine withdrawals. I just spoke to my doctor and he told me to get off the pill RIGHT AWAY. He said that what i'm experiencing right now could possibly lead to a stroke.