Dear Yuk mama,
Don't worry, I had the same experience like you when I was pregnant. I went to the dentist when I had been pregnant for two months. I even pull out the tooth. My baby is now about two months old.
So, don't leave yourself in such a pain situation coz it affects your mood very much and makes you so annoyed. Just go and consult your doctor before you go to the dentist. I think you must deal with it as soon as possible because you are going to give birth in the coming August.