What to eat when sick

I’m 21 weeks and I caught something. I feel like I have to go to the bathroom and sometimes I do and sometimes I can’t. No dihareea (sp?) but when I do it’s not my normal stool.

I also have a head cold. My tummy is upset. I can feel baby moving

Question: I feel like I’m living in plain toast and Lipton’s chicken soup. Anything else I can eat that is okay off my tummy and bowels so baby is getting what he needs?

Just has OB appt Monday so that sucks as I can’t ask.

Thanks!