Dark red blood spot above vaginal opening. Had rough sex two nights ago. What is it? Please Help

I noticed last night that there is a dark red spot on a little flap of skin just above my vaginal opening that was not there in the past. I'm not experiencing any discomfort like pain or itching from it, but I'm eager to know what it is. I had a lot of rough sex multiple times throughout the night with my boyfriend two nights ago and I was a little sore both on the inside and the outside of my vagina but I thought that was normal. I'm no longer sore. My boyfriend and I are both tested and have been exclusive sexual partners. I'm also on birth control pills.

Has anyone seen this kind of dark red spot on there vagina? If you think you know what it is or what it could be, please let me know. Thank you very much!

i dont see anything wrong at all. your vagina looks very good. do you more pictures that show it better ?