Ct scan at 11 weeks

I was admitted to the ER last night for shortness of breath, dizziness, and chest pains. They did and dimer test which came back quite elevated. I had an ultrasound done on legs, EKG done and they couldn't find anything. I had to have a CT scan done and now I am worried that something bad is going to come because of it. My OBGYN is the one who ordered it and we talked to the head of radiology and she ensured me I and baby would be fine but that there was still a risk later on. I don't know what to do, I  feel like a horrible person and mother already.