I'm 10 days delayed. 8 days is my regular menstruation. But last month it only last for 4 day, from March 19 to March 22. Now, it's 28th of April, but still I don't have my period. My boyfriend and I had an UNPROTECTIVE sex. There's no sign that my menstruation's coming. There's no also sign that I'm pregnant. But still, I don't know what's my situation right now. I'll be having pregnancy test tomorrow. Any advise?