Normal to feel better than worse?

So I’m on my 1st reoccurrence. 2nd round of Didicid. 7th day of meds. On day 3 I started feeling better. No vomiting. Day 4 I actually had a semi solid BM, again no vomiting. I had tons of energy. Day 5 was eh. Nauseous but didn’t throw up. Just felt kinda yucky and ended up in the bathroom more often than the last two days

And then yesterday I was super nauseous again and vomited/ low energy/ watery stools and 10+ once more and today I’m seemingly headed in that same direction.

I’m on Florastor twice a day. Eating bland foods. Staying hydrated. What am I missing here? I’m supposed to checkin with my doc Friday to see if I need a longer course of Dificid or as he said “switched to vanco to bomb things” but idk.

I’m just not liking the sudden backslide? Normal?