TTC - blood during sex no period

I had to address this because it's never happened before. I have been trying to conceive for about 3 months now and no luck yet. I am extremely regular and have no health issues. I had inter purse with my husband last night and noticed I bled during sex not a lot but nothing that's ever happened before I figured my period came extremely early but I haven't gotten it yet and usually my periods are very extreme with cramping and last about 6 days. My calendar shows I'm not supposed to get it for another 5 days so it was a bit surprising. I'm hoping it's an early sign of pregnancy since I have not yet gotten my period. Has anyone ever had anything like this happen to them.