Definitely too early for baby food!

as a one time thing ok but don't do it again she is wayyy too little

It's a little early, but I think it's okay as long as you don't continue it until six months. Might want to mention it to her doctor, though.

I don't think so...my mom told me it will upset the stomach.

no. i wouldn't again. their guts can not handle it. look up "virgin gut"