So I've been on Sprintec BC for 8 months now and have been sexually active for three months unprotected. And on Saturday and Sunday night I took the pills and hour and a half late. I usually take them right on time at 9. And Monday night I noticed a brown discharge ONLY when I wipe. Today is Thursday and now it's turning a little red. My period isn't due for a week and a half. I'm almost done with the second week of the pack. I'm cramping only on the right side and was light headed and queezy just today. The pain in my ride side flares up a ton then goes away completely. This is the first time I've ever had any bad symptoms taking my BC. I took a pregnancy test yesterday and it was NEGATIVE. But I'm getting these unusual symptoms this late into taking birth control. What could be going on? HELP ME ASAP PLEASE