Everyone is so excited

Everyone is so excited about their 1st u/s... and I'm over here being a nervous wreck. In June I went in for a 7 wk u/s and heard the dreaded sentence, I can't find a heartbeat. I went on to have a d&c and was pregnant again within two months, I lost that baby as well, around 5 weeks. So tomorrow I will be 7 weeks... and it's my u/s appt. Pretty sure I'm gonna have a panic attack when I walk into the u/s room!! Wish me luck ladies. I wanna be excited but to protect my heart (at least a tiny bit) I can't be. I keep telling myself to breathe!