Hi, I'm 16 and the beginning of march during the first week I had a normal period flow. The second week after my menstrual my boyfriend and I had protected sex (I am not on birth control). The last day of march which was the 31st, I started spotting a bright red blood which was very light (i usually have a normal regular flow). today Is the first of April and it is still light..what's going on..Im worried. Help please.