Wisdom teeth vary in the amount of impaction, and the orientation of them...so your treatment will ultimately depend on that. Dental X-rays have negligible risk to your baby, but it is more likely you will need an X-ray called an OPT which is the one that goes around your head and shows all teeth. There are also NICE guidelines for the removal of wisdom teeth. They want you to have at least 2 episodes of "pericoronitis" (which is inflammation or infection around the crown of the tooth)! Unless the tooth is grossly decayed they may not remove it just yet.
The X-ray they take will show them the level of impaction, orientation of the impacted tooth and closeness of adjacent structures, namely the nerve which travels down your jaw. If the nerve runs close to the tooth you may be left with parasthesia (numbness) to your chin,lip or tongue. This is quite uncommon and usually temporary but they will need to warn you of that.
Wisdom teeth can be removed under local anaesthetic in surgery if your dentist is happy to do this. If you were particularly nervous of treatment and wanted it removed under sedation of general anaesthetic they would prob wait till baby was born.
If the tooth is impacted you will need a surgical extraction which involves cutting the gum, and sometimes bone removal to free the tooth. You will have stitches afterwards and the swelling and bruising would prob last a week, so most patients take a week off work after.
Wow this is getting longer than I planned! For the time being your best to keep the area as clean as possible, rinse with corsodyl mouthwash. Your dentist may also prescribe you antibiotics. Amoxicillin is perfectly safe in pregnancy. If you're allergic then erythromycin.
Hope this helps and you get it sorted hun xx
