HSG test!?

Keri • Married Feb 2015, TTC since then! I`m 33, husband 37. Philippians 4:6
Hi! DH and I have been TTC > 1 year now. We've been tracking everything (I'm super regular!) but just can't seem to get the timing right. SA was normal...now it's onto the HSG test next week! Has anyone experienced this? Pain? Pregnancy after? Thanks!