Incomplete miscarriage

Danielle👦🏼👧🏽👼👼👼🤰🏻

I found out on the 30th I was pregnant had the blood draw on the 31st with low hcg at 16.7 and a good progesterone level at 23.03 went back yesterday and it had only risen to 40.1 and my progesterone dropped to a 9, following that appointment I went to the er due to cramping down my back and butt and abdomen. There they told me I’m having an incomplete miscarriage at 4w2d. I know it was early but I’m still so sad about it. I had a chemical a month ago and I already have a 3 year old. We’re just trying for one more and it seems impossible. Does anyone have any advice?