4 weeks pregnant with my rainbow baby & scared af

So I had a miscarriage at 8 weeks with my baby last December & I just found out I’m pregnant! My husband and I are so excited but feel like we have to hold back the excitement to be prepared for the worst. I’m just praying for a healthy baby and CANNOT WAIT to hear a heart beat in a few weeks (we’re not announcing until then) Aaaaand I have no pregnancy symptoms other than having to pee a lot, which is miraculous considering how sick I was those first 8 weeks last time. Any rainbow baby mommies? I need some reassurance 😣