I am wondering if my contraception failed (after I threw up after drinking or possibly when my pill dissolved before I can swallow) or if its normal but I had a 6 day period from Dec. 13-18 and another 6 day period on 24-29 . January 9th I had light pink spotting for about a day and a half and nothing sense. I've been hungry a lot lately and heartburn every night and I never get heartburn. I don't know if I could possibly be pregnant or if I'm just over analyzing BC I don't know which"period" to go by. Am I late. According to this app my high ovulation day would have been December 30.