I Had Oral Surgery Yesterday Morning And Found Out Today

I had oral surgery yesterday morning and found out today that I am about 4 weeks pregnant. I am so worried about my baby. I was under benzos for before the procedure, nitrous as well as iv sedation because of my very bad anxiety. I had 5 teeth removed and a bone graph and have been taking Talwin for the pain(I am allerigic to morphine, vicodine, and Tylenol-3) like I said I found out about the pregnancy today and am still in tremendous pain. First, is the baby going to be ok being exposed to be sedation? And second, is it safe to take he Talwin for the next few days to calm the pain?