Our Journey/ HSG advice?

 I have been off birth control for almost a year now. My husband and I have been actively trying to get pregnant since last October. After getting off birth control I have gained almost 30lbs, and have had VERY irregular periods. My doctor diagnosed me with having PCOS by my symptoms and an ultrasound. I'm having a lot of lab work done and my husband is being tested as well. Next step is an HSG test, then starting Clomid pending HSG results. 
I'm nervous for what's to come and just trying to stay positive. Looking for advice/ similar experiences to mine. 
Do they let someone go in with you for the HSG test?