After a 2nd trimester loss how do you stay calm?

Nicola • Mommy to the most loved, beautiful angel in heaven.. Giovanni Antonio Brown born January 21st, 2017 👼🏽❤️ My beautiful rainbow baby Ezra was born December 20th, 2017 🌈👶🏽💙 now expecting baby #3 12/2021 🥰

I lost my son at 24 weeks, I'm now 16 weeks with my rainbow baby. I have a fetal Doppler to help me keep my cool but some days it takes me forever to find the heartbeat and I think maybe it's not even the baby's heartbeat I'm hearing 🙄 so how do you keep calm between doctors appointments?