Replacement Implant

My birth control expires on the 8th so I have an appointment on the 7th to get a replacement. I was dumb enough to let my mom make the appointment but it’s a new facility and I didn’t know the number and so on and so forth. I’m 18 so I can go by myself, but my mom made the appointment with her doctor who is a male. I thought I would be comfortable with it but as the appointment approaches I don’t know that I am. The only reason being my mom told me not to have sex 48 hours before because they’d be doing a pelvic exam but I don’t know why they would need to. I got a Pap smear at 15 after I being molested and the doctor (who was a male, but my mom didn’t know what she didn’t know) pretty much treated me like I was disgusting for being sexually active at 15 and told me my vulva looked like I had herpes. I did not. I got on birth control shortly after that and that didn’t require a pelvic exam. I told my mom this and all she said was “Well, you’re 18 now and it has been 3 years,” but I’ve only been sexually active with one person for three years and I don’t even want to get a replacement implant anyway, this is the choice of someone who passively uses the my house my rules tactic which I can understand because she doesn’t want a pregnant 18 year old but there are other ways to avoid pregnancy without doing things to your body that your body doesn’t like. Anyways can somebody please tell me if there’s a way i can politely reject a pelvic exam for a replacement birth control because I’m uncomfortable at the thought of a random male looking at my insides and outsides for the first time we meet even if he is a doctor.