Strange bleeding happening

Ok ladies if anyone has had this before I'd be interested to know if it turned out that you were prego. About mid cycle my and my hubby bd and after he told me a was bleeding a little. I had no pain and when I went to the bathroom the bleeding was already gone. So I didn't think anything of it. Now over a week later at night I got thing strange pain in my lower abdomen then it stopped and the next day I noticed slight brown discharge for that day and a very little the next. Then it stopped. Still to early for period it's due it the next couple of days. But I've had cramping ( light) and sore boobs. Just not getting my hopes up cause it always turns out to be nothing. :-/