I had sex the day my period was ending and I its been 17 days since my period started and I have bloating and am bleeding very light. I dont know if I am still on my period since it didnt completly finish or if I am pregnant. I took a pregnancy test and it came out negative. With my last 2 kids I didnt find out I was pregnant until I was 2 1/2 months pregnant with my second and 3 months with my first.