First time this has ever happened?!

First time this has ever happened?

this might be tmi but it is the middle of the night and i'm concerned and i'm going to ask anyways. Tonight after sex i began to have some bleeding. This is the first time this has ever happened to me. I finished my period 3 days ago so i know its not from that. And the sex wasn't anything crazy or wild but i was on top and went a little more vigorously because i wanted him to finsh fast cause i was tired. I do not have any std's and no signs that i may have any type of infection. So has anyone experienced this before? Do you know what caused it? I am definately going to call the doctor but any insight would be great.

2 weeks ago
it was new blood, very pink.

I don't think it's anything to worry about. Its happened to my a couple times.
1) If I had just ended my period and he went too deep it would sometimes cause me to bleed.

2) If it's vigourous, rough, or just deep it can happen. Its just him tearing or hitting something inside.

If the bleeding doesn't stop it COULD be a torn membrane...I had that problem after my FIRST time.
Anyways if you are worried talk to you doctor for sure
hope this helps