Annoyed with UTI like symptoms....

I'm almost 27 weeks, I saw my doctor yesterday and he said everything looked great. A couple weeks ago I had been treated for a yeast infection and symptoms got better. Now I have burning with urination before and after. Its really annoying because before I was pregnant I got utis alot, but everytime I get checked they say it looks normal. I think the docs think I'm crazy sometimes lol. Even sex is hard to have when I have this burning feeling and my bf says he doesn't know anyone who gets these as much as I do. What should I do?