How to not Have anxiety or panic when baby is sick?

Hey ladies my 7month old had a fever last Saturday it went away with Motrin , vomited Sunday and had diarrhea. Yesterday she could only hold down 2 oz bottles that were served 4oz in 2 30minute periods. Today she came off an airplane and was acting as if she was drunk and took her awhile to focus (after eating a 8 oz bottle ) she then 30minutes later threw up in her car seat , then I rushed her to an urgent care because she hasn’t been acting like herself. She then throws up in the lobby everywhere , we get back to doctors office and doctor checks everything and says it’s just a stomach bug ? So now I gave her some pedialite mixed with water 2oz so far. I have so much anxiety and just want her to be back to her normal self. She hasn’t popped a tooth yet so could this be a teething sign? It’s just so weird her not wanting to eat and not holding anything down:.(

Please help with advice

:...( #WorriedFirstTimeMom