Mine played up when i was pg last time. I already knew i couldn't have it taken out in the chair but needed to see a surgeon but went to the dentist anyways. They gave it a really good clean with peroxide to stop the infection and it gave me so much relief. I put peroxide on it for a couple of days (perfectly safe) after and used listerine and it really helped get me through until after the baby was born and i could have it removed when bub was about 6mths old. That was a whole nother story but don't hesitate to go to the dentist now and at least have it cleaned.
Ring Mothersafe if you want to get information about how much panadol is safe. Look up the number online.
ps it was also worth while investing in a good electric toothbrush to keep it super clean and stop infection.
HTH