I'd prob talk to my doc if it was me.
I do too. It's super weird, I feel out of breath when I'm not doing anything and my heart is racing. Please stay hydrated on Gatorade (not power add or whatever it 8s, it has high fructose corn syrup and that's something to avoid even when not pregnant!) or water, preferably water! My guess is it could be something about blood pressure being too high. Eat vegetables and drink water. I started eating better and it went away. I went up some stairs and I felt fine. Ask your doctor at your next appointment.