Pain In Right Post. Lateral Lower Back And Hip During Orgasm

I'm in my mid 30s and have developed this wave of dull pain (referred?) that gets progressively more intense that runs through my right, posterior lateral lower back and hip when I get close to orgasm and it keeps going until maybe 30 seconds or so after and fades. It definitely feels like a deeper pain and nothing superficial. I have tried to relax more during orgasm and it seems to help sometimes so perhaps it is muscle or nerve compression related?

I have also experienced the pain come and go on seldom occasion outside sex also.

I am wondering if there are any muscle strengthening exercises or anything I can do to relieve the pain permanently.

Thanks