I'm 15. I have had sex twice. Both on birth control and a condom. Recently we had sex January 6th, and I quit my birth control almost two days later. I had a period due to stopping the pills I assume, but I've missed my period February, and now it's march 24th and I still of not had it. I took a test mid February and it was negative then I took another one beginning of march also negative I have clear like mucus discharge for almost the past two days, and just started last night my nipples are sensitive to the touch JUST my nipples. Please help, thank you