Do I go to the doctor

I’m not sure what to do...

the past 4 days I have had bad diarrhea.. I can’t hold anything down...

Every time I eat or drink it just makes me run to the bathroom...

I’m starting to feel really weak.

I have an ultrasound in two days (when I’m 10w pregnant) . Idk if I should wait or just go to ER?

Idk if I have food poisoning, if I ate something bad, or if this is normal...