Rainbow baby anxiety

So tomorrow is our 16 week appointment and I can't help but be anxious. We had a miscarriage in may (found out at 12 wks but baby stopped development at 6 or 7) and I can't shake the anxiety feeling. We have seen an ultrasound at 8 weeks and heard a heartbeat at 12 but it's like I can't get over that nervous hump? My belly and boobs have continued to grow, bit morning sickness has finally started to die off, starting last week it's down to like once every few days, and I don't know what being pregnant in the early second trimester is supposed to feel like. Anyone else have anything similar? When does the anxiety stop so it can just be 100% excitement?