Ni leasha
Don't worry hun. Pulling teeth will not harm your baby, and neither will the abtibiotocs. The anaesthetic they use only has a local effect so again it will not harm your baby.
Yep
I had a molar pulled out when I was about 16 weeks pregnant with DD. Believe me I grilled the dentist and did tons of research beforehand because I had miscarried my previous pregnancy so I was super paranoid about doing anything that even might cause a problem.

It really is fine and safe and no risk to your bub. There is actually more risks to your baby leaving an infected tooth - you still have quite a way to go yet before your bub is due and infected teeth cause all sorts of nasties to get into your bloodstream over time. Perhaps let your partner know that too

Best to get it dealt with, for sure.