HSG testing?

Brite

I’ve never been pregnant after trying for 3 years

& my partner has no issues. I had a chemical last summer but nothing since. Periods are regular 29-31cds and my periods are 5-6 day long. I get scheduled for my HSG in 6 days(the start of my period). I know what to expect for pain wise. My doc said she might prescribe me medication? Any idea of which ones?? I’m ovulating on day 13 of my cycle