Why did I bleed so much??

Sabrina

I’ve only had sex 3 times and I didn’t bleed during or after either but last night me and my boyfriend were having sex and there was blood EVERYWHERE. It didn’t hurt so I didn’t notice until he said “I thought you were off your period”. And when I checked out the blood it wasn’t period blood. The bleeding mostly stopped but I did spot a little throughout the day. I know you can bleed during sex but it just seems weird that it hasn’t happened until now. Can someone please tell me if somethings wrong or not??