Can't find heartbeat.

Mrs. • Momma to 2 on earth and 2 in heaven. Pregnant with the next adventure! 2014 👼🏼 2016 👧🏼 2018 👧🏼 2020 👼🏼 2022 🤰🏼
Today I had the urge to check in on my little one. Well I can't seem to find the heartbeat today!!! I'm 13 weeks and have been able to find it until today. Is it possible that everything is completely fine and baby just moved to a total different spot in my tummy? My next doctors appointment isn't until next week. And I'm really worried. Yesterday I felt like fainting and today I feel fine. I'm just really worried looking for some comfort.