What happens if you need dental work requiring xrays whilst pregnant? I have been today because I'm having some pain and I need a filling. They won't xray because I'm in early pregnancy and they don't want to do the filling without xrays because they don't know how deep it will need to go. If too close to the nerve it will be root canal or extraction rather than simple filling. I've been told to wait if i can but as I am in 1st trimester this seems ridiculous. I thought they could put a protective apron on you to protect for xrays? This is stressing me out!