I recently had sex when my boyfriend . What do you think this could be?

Uploading file...my boyfriend and i just recently started having sex after about a month of dating . i was tested after my last sexual partner and everything came back negative . he assured me (stupid i know) he didnt have anything . i also shaved right before . do you think it could be friction sores ? i have a doctors appointment monday ..pictures attched

where is that

right in the crease of my inner thigh and were my vagina meets