I have POTs and the meds are making me extremely nauseous and dizzy. I’ve tried everything. Can I stop taking them immediately?

I plan to follow up with my dentist on Monday, but they’re closed for the weekend and I am suffering from really bad nausea and dizziness. I don’t believe it’s due to the anesthesia bc I had a major surgery last year and was completely fine the next day. I am eating my meds with food, drinking tons of water and Gatorade, using meal replacement shakes for extra calories, etc. But the nausea and dizziness won’t go away no matter what I do. I have to go back to work soon and I’m afraid of passing out again. I was told none of the meds would interact with my pots but I can’t drink my usual ginger tea or hot things to help with the nausea just yet.

Anyone with similar issues have any advice?