First of all, are you living together at her parents’ home? Your parents’ home? Or do you have your own apartment? Living with parents in the same house can definitely be a problem that you need to correct!
Second of all, ask her if you can go to the doctor with her and discuss your concerns with her or him together. If there is truly a medical issue, you need to be understanding, but also knowledgeable about what’s wrong, how long it’s going to be problematic, and what the expected prognosis is.
If those two things don’t help, then you need to put a hold on the wedding. It sounds like aside from living with parents and a medical issue, there may be something else going on, and I don’t know what it is — and neither do you. You need to talk to her and express to her that your sex life is important to your relationship and that you’re not happy about it. If she doesn’t care, then she’s not the one for you.
Normally, the beginning of a marriage is a time when sex is at a peak because there are so few obstacles and lots of joy and intimacy. If you’re missing these things, you may be getting married for the wrong reasons.
I hope this helps — and let me know what’s going on after you read this and talk to her.
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