TTC after miscarriage

Good morning ladies!

After my miscarriage, I decided to seek fertility to be monitored. My Day 3 bloodwork came back good! I went in for a scan on day 11 (yesterday) and had a 22mm follicle in R ovary. The doctor said I would be ovulating this weekend and to have sex both nights then start Crinone (progesterone gel) Sunday night. All of my cycles before getting pregnant were day 15-16 ovulation. Did anyone’s body change after miscarrying?

So nervous for a multitude of reasons... one being starting progesterone too early or too late as I did the last pregnancy...

I am learning to trust... but would love some stories/opinions!