Am I miscarrying?

Hi I am feeling a little paranoid I think but I’m 8w1d and since 4w I have been extremely nauseous every morning, vomiting about twice a week at least while most days it has been gagging. Three days ago the nausea suddenly stopped. This was alarming for me because the nausea was pretty strong every day before. I also have a home Doppler and perhaps it’s too early to detect but in my worry I tried it for the first time today and I didn’t hear any heartbeat other than my own.

Did anyone else experience this and go on to have healthy pregnancies? Or should I rush to my doctor? My first appointment was supposed to be next week:/