Kinda having minor anxiety

So I had an appt at 9+1, couldn’t hear the heartbeat but saw the flicker on the ultrasound. Since then I’ve had days where I’m super nauseous and such but his last week (week 12) when I wake up my stomach is flat and I feel fine. Throughout the day I’m starving like always but I don’t feel that nauseous other than from being hungry. By the end of the day I have a serious bloat belly by I am getting worried that I’m just eating and getting a belly and something might be wrong. I was sooooooo sick the first 11 weeks so I knew I was pregnant every day. But now it makes me nervous that I don’t feel or see anything. My next appointment is next Wednesday at 13+1 and I’m really praying baby is there and growing and a heartbeat is finally heard.