Hello. This is Dr Rubal Jain, MD Peds and Lactation Consultant.
My advice would be to consult once, as your child requires a thorough examination, especially of the vaccination site.
In the meantime, I would suggest you increase her fluid intake in the form of ORS and breastfeeding to avoid dehydration.
She should be having 8-10 dirty nappies in a day.
Next Steps
Get the vaccination site examined.