I had unprotected sex on 14th of April but took a contraceptive pill after 2-3 hrs. On 22nd April while urinating I saw something brown coming out. I was blood. From then on whenever I pee,brown blood comes. I took a pregnancy test on 28th April but the result was negative. My periods was due on 30th April but it's 3rd may now and there's no sign of my periods. I had stomach cramps on 23rd to 25th of april. I am still seeing that brown spot. What is it? Am I pregnant? This was the 4th time I took a contraceptive in 2yrs. Plz tell me what is it?