anxiety and pregnancy

I'd been having severe anxiety since last December. I went to my doctor two weeks ago, because I kept waking up every two hours in a panicking cold sweat. My heart would be racing. Turns out, I am actually pregnant. This is my second. My daughter will be nine. I was afraid to have another child because I'd had preeclampsia with my daughter that developed into congestive heart failure after birth. My daughter was discharged a week before I was. I'd had lymphoma 14 years ago that had put pressure on my heart. I have also been diagnosed diabetic this last year. (Controlled by diet and exercise.) needless to say, I'm pretty scared. This pregnancy already feels different than my last. I'm not as sick. My symptoms are different. I can't allow myself to get excited about this until my 8 week appointment on the 15th. I worry that maybe it's not viable and I will just be forced to go through a traumatic D and C.