Unusual sensation in that area.

I (FTM) have been in a relationship with my girlfriend (CF) for nearly two years, but we face a challenge: she won’t perform oral sex on me. This wouldn't be such a big deal if it weren't for the fact that she really enjoys receiving oral sex herself. She mentioned that I have a 'weird texture' down there, which has made me feel incredibly insecure, especially as a transgender man. My girlfriend is cisgender, so she doesn't fully understand my feelings about this. Hearing her comment about the texture has triggered my pre-existing anxiety, leading me to obsessively clean the area in an attempt to change it. Every time I bring up the possibility of trying again, she immediately shuts me down. Although she talks about it in messages and calls, it often feels like she just isn’t in the mood when we’re together. I’ve scrubbed so much that I’ve caused irritation and swelling, yet I still feel unclean. I don’t have any issues with odor or hygiene—I use a loofah and warm water to wash regularly. Hair isn’t a problem either; I actually don’t shave because it makes her uncomfortable. I keep it trimmed, but I’ve noticed that I’m starting to lose hair in that area for unknown reasons. Am I doing something wrong?