Ok my last mentrual cycle was between 10th-14th of February, I had unprotected sex on the 23rd, 5 days ago I started spotting very little but consistent enough for a pantyliner and it was pinkish/brown, accompanied by lower back ache/crampy like..I was worried because I was not due for a period untill today or tomorrow, which is odd because today I started flowing a little heavier but its been Bright red all day and still crampy with a bit of clotting. I just recently took 2 pregnancy tests which both were neg. Mind you I Hardly ever have cramps or even spotting so all that is very unusual for me..I just recently got a prescription for BC and Im supposed to start on the sunday after my period starts or on the sunday it starts and here it is sunday...Im not sure if I should take it and assume Im not preg or what...HELP???