nightmares on losing a twin or both

Kyla
Just want some momma reassurance. We tried to get pregnant for 18 months. Finally, we found out we were expecting. Found out twins at 10+1 in ER. On 10+5 we had our regular appointment and both were Doug great. Both measuring exact to the date and both had heart rates of 163. But I'm still so petrified. I'm not showing and constantly dream of losing one or both. I can't seem to shake it. . .