toothache advice

I am currently 34 weeks and For the past couple weeks I have been having a lot of tooth pain it's not severe but just nagging... I went to the dentist last week for pain on the right side which she referred me to an endodontist for. That pain has gone away but I am now having pain on the other side, which she didn't have concerns about. I hate to spend another $100 on a checkup if it's something they can't do anything about, any suggestions for me. I am just getting worn out about it because it's stressful not knowing what's really going on.