probably just from you just starting the pills...did your doctor discuss some of the side effects with you before giving you the prescription? I was told and expected spotting throughout the first pack of pills..sure enough I spotted the entire first month, i was told that other side effects such as sudden headaches and nausea would subside after pack 3...so there will probably be a few side effects you experience for the first 2 pack of pills since your body is adjusting to the horomones..if they dont subside after that then let your doctor know and maybe they can switch you