Vaginal bleeding after sex??

So this is the second time this has happened.

My fiance and I have only had one sexual partner (each other) and have been having sex for about 2 years now. After we had sex, I was a little swollen and in minor pain. There wasnt a moment that it was very dry, i was pretty lubricated the entire time, and it wasnt rough.

The next few days it has been hurting really bad the further he gets inside of me and feels like needles are sliding against my skin with every stroke. Today it was so unbearable I couldn't get half of him in me before I almost wanted to screen from the pain. It felt like my skin was ripping open and needles were sliding into me. I was very well lubricated so dryness wasnt an issue, and when I wiped myself off afterwards I was slightly bleeding (not period blood or anything like that, like fresh blood that you would see dripping out of a paper cut)

Have any of you ladies experienced this before? We never have, and were wondering if you ladies could maybe give us an idea of what's going on??

Thanks in advance!!

Edit: I am on birth control (the pill)