Anxious and worried.

I am high risk due to having 3 miscarriages, an auto immune disease, and preeclampsia and delivering my 1 year old at 30 weeks. I had an ultrasound at 6w and we saw a tiny flicker with hb of 110 and my MD originally said I would have weekly ultrasounds at first which is how it's always been. I'm 7 weeks and when I called today they said I didn't need another one since we already heard the hb until I'm 11 weeks and I can get my NT scan and blood work. I already have bad anxiety and I am so stressed waiting a month. I just can't handle carrying another baby for weeks that has passed. Just the thought of it kills me and I needed to vent a little.