Hi. I had a mmc about 6 weeks ago and recently started having sex again. The first couple of times everything seemed fine. This last time after we had sex I started to bleed a little. It got a small bit heavier the following day and then tapered off. Picked up a little and has gone again. Im not sure this is my period because of how its been and it started right after sex. Has anybody experienced this before and have any advice? Im worried something is wrong