Dentist Issues

Okay, so here’s the problem.. I’m scared of the dentist.. I’m talking about I can’t even think about making appointment without basically having a panic attack.. anyways I’m almost 20 weeks pregnant and I have a super badly decayed tooth. Like half is missing 😔 .. well I’m not sure if it’s infected but obviously I had to make an appointment because I’m in pain. I can’t get in until Monday. And i seriously don’t know what I’m going to do. I’m so fucking scared. Do any of you ladies have phobias of the dentist? If so, what do you do to calm yourself down while at the dentist? I’m honestly probably going to cry and I’m scared that it’s going to be sooooooo stressful for me that it’s going to hurt the baby because of my fear. I’m just looking for advice please..