Pain during sex

Shelby • Happily married since 6/27/14, Connor Dean born 9/5/15
I'm currently 27 weeks along and since about 25 weeks I've noticed that intercourse has become painful. We've tried using lube and I still feel pain. I also haven't had any pain while peeing so I don't think it's a UTI. 
 I'm debating on if this is a matter that I need to call the doctor about or if it can wait until my next appointment on July 2nd.