What Could This Be?

Before I go ahead and explain what happened I have to let you know that my partner and I have been TTC for the past 8 months. This past weekend I don't know what made this thought come into my head but I said to myself I think I need to take a pregnancy test then I was like no it's nothing I'm probably just wanting this and it's nothing. So in this week my partner and I had intercourse and I didn't bleed or anything but the morning when I went to pee and wiped there was a little blood, like very little. I don't know if this could be implantation bleeding or just bleeding cause of the intercourse that night. Please could I get someone's advice?