How long without being able to keep fluids down would you go to ER?

Lindsey • IVF miracle born 12/11/2018, surprise baby #2 due August 2021!

I haven’t been able to keep any fluids down since I woke up this morning at 7am. It’s now almost 10pm. It started with a migraine which is now mostly gone. Hoping I wake up feeling ok to drink. Dr said to go to ER if I feel dizzy or lightheaded, but I’d really rather not get that point. I’m 10 weeks. How long did you suffer through vomiting up all liquids before you decided to go to the ER and get IV fluids?