Im not experienced ☹️give me your thoughts

My period lasts 3 days , I got it Monday and I had sex yesterday(Wednesday) so it was my first time ! Me and my boyfriend didn’t plan it he said “I’m just gonna rub it against you” yeah okay!!

I was wet so was he I’ve always felt ready for this, I felt no pain I felt pleasure!

Since it was my first I didn’t know if I was actually having sex

He started out just rubbing them I just felt something go in a hole and then pleasure that’s it !

He did not cum inside of me!

What I need help is...when I got home i had blood not a lot but i don’t know if it was blood from the sex or my period???

Or both ?

I have no clue and he got nervous and was like “what if some cum went inside”

But I’m not experienced! Someone who is can maybe help out