Can my tubes be blocked?

I had chlamydia wasn't treated right away due to no symptoms. Had 1 case of possible PID hospital at the time said they doubt it did damage because I got treatment right away... what other ways can you get blocked tubes? I have a HSG in a few days. So scared. But honestly what are the chances??? I had a vaginal ultrasound year ago that looked good! I have PCOS. If I do have blocked tubes what could potentially be my options? I'm not rich at all.