NSFW Why do I keep getting nosebleeds during sex?

Four times in the last 3 months I’ve gotten a nosebleed while going at it…. The first and second time it seemed random and kinda funny. Now its starting to get frustrating and annoying…
High blood pressure? Easy repeat due to previous incidents? The weather? New surroundings? What’s the deal? Should I go to the doctor about it?

I’m not a nose picker, lol. I used to get nose bleeds a lot when I was a kid but never saw anyone about it or anything I just dealt with it.

This is kind of incovenient, however, and I would like to put a stop to it.