Leukaemia survivor here... It might be a stupid question and everyone is different, but have you tried fresh fruit and ginger ale?

I went through six months where that was all I could eat/drink. Another patient in the ward suggested ginger ale and it was a surprise (had never drank it before... or since).

Nausea got so bad that even thinking about it (for example when a doctor asked) would trigger throwing up so I get what you mean about PTSD.

All my best wishes for you both.