Yes, definitely see your dentist. You can get an abscessed tooth which is dangerous (infection way to close to the brain). It's hard going to the dentist though, I know, when pregnant. I tried to have my teeth cleaned and every time they put in the equipment, mirror, tool, etc. I started gagging. They finally told me to brush well, floss and rinse with a cleaning mouth wash and to come back to be officially cleaned after I had the baby. Ugh.
So, I know it can be hard but if you are in pain, you have to see your dentist. they will advise you on what is best. good luck hon
Go see your dentist. It's safe.