HSG test

I am having the HSG test in a week because I had a cone biopsy done 2 years ago. I ended up having a LEEP procedure as a result from that biopsy. So now my gyno just wants to be sure I'm all clear. I've only been trying 7 months but she wants to make sure. Has anyone ever had this done? Is it awful? I've also read that some studies show an increase in fertility. Any help or support would be awesome. Thank you!