I had quite horrendous sickness combined with absolutely no appetite for 2 weeks straight. After that the sickness was still bad, but I could at least know what I wanted to eat. Sickness eventually went around the diabetes test mark.
Coke did well for my stomach. Water didn't do it for me (fizzy or not ). So I drank 0.5 l Coke every day. I stopped it as soon as I could, though 😊.
Only eat what you feel like. If it's crap, then eat crap.If it's strong tastes (like me) then ignore the dire advice that you should stick to bland stuff. The things you feel like have an uncanny ability of staying down.
Sweets like Haribo and dried fruit could briefly fend off nausea. I've heard other women who liked mints for this.
I felt just, lying down, watching TV and sleeping helped me cope. Thank God for the BBC. Though if you're working outside your home, then that doesn't apply unfortunately...
One pretty disgusting one that did help me keep down food in the morning when I was still throwing up , was waiting for the 'purge '(to use a nicer phrase), then rush downstairs and have breakfast (in the beginning that was just an orange, I switched to muesli later). Otherwise my stomach would reject anything, even water. I also did this if dinner was late, because it was nicer than throwing up everything.
Oh and strangely, scrolling through the Facebook newsfeed made me feel sick. Anyone else had that?
Sea bands, ginger, little and often etc. All good advice I'm sure but also sooooo misguided in my case.
Good luck.