Really need advice

Princess

So my mom doesn’t know I’m having sex. She thinks I’m still a virgin and she’s super judgmental when it comes to sex only cause she was a teen mom. Every time I sit or stand I feel uncomfortable like it feels like a rash between my legs/vagina and I’m unsure.

I wanna go to the hospital but my mom keeps saying it’s a waste of time and My doctor appointment isn’t until May 1st. What should I do?