My baby is almost 6 months old. I had sex last week on the 19th and was bleeding very little light pink afterwards when I wiped after going to the bathroom. The next 2 following days I had a little of light pink agin when I wiped. I was supposed to get my period on the 25th or yesterday and it didn't show.  Could it have been implantation bleeding or just a little blood from the sex? I want to take a pregnancy test , but I don't wana take it too soon, so I read that I should wait at least 1 week after missed period to get a good answer.  Also, if it helps, the last time I had sex last month was on the 29th.