Bleeding

I am 7 weeks 1 day today and my husband and I had sex a few hours ago. I just went to the bathroom and when I wiped there was some blood. Not a ton, but it was there and it was the normal red of a period. I think I wiped it all away because I wiped again and there wasn't any. I didn't have any in my panties or anything so it wasn't a lot, but this it my first pregnancy and it makes me really nervous. I had a friend have a mc last week and a cousin who is going to be induced in a week and she was told her baby is going to pass away shortly after birth so I am even more nervous now. Has anyone ever had slight bleeding after sex while pregnant and was everything okay?