Oh Ina, that is so miserable. There have been many suggestions over time on dealing with the nausea, ginger capsules, candies or tea helped me. And lots of water.. Also, I ate something every hour, a small piece of fruit, an ounce of cheese, a few crackers,
half of a proteindrink. . Also, taking the meds at bedtime allowed me to sleep through the worst of the nausea.

One bit of curiosity, typically treatment starts with antibiotics 3x per week. Did the doctor explain why they were prescribed daily?

I wish you luck finding a strategy that works for you.
Sue