Are these fever blisters ?

Hello my daughter has two ear infections supposedly and has been on amoxicillin for the last 3 days but still been super tired , cranky and still been getting high fevers been on molten every 4 hours she started getting these blisters ? Prior to this she had constipation issues and finally got over it to go to this . We have been to ocean for first time and she touched sand but the blisters are only on hands and neck ? One on her lip And Tongue that look like cold sores idk what to do . And yes I’m bringing her to hospital I just thought maybe post and maybe somebody has seen this before