Baby vaccination. To b pain free.

Hello docs... Today I did my babies vaccination pcv booster...varicella... At private centre...which is supposed to b pain free...and doesnt cause any fevr... But she got fevr and was irritated... To add here she developed some sneezing from today afternoon...and then in the evening she had runny nose and watery eyes... I think she got cold...but she was absolutely fine till yesterday and today morning as well...I ddn knw wt wrong happened she got cold...I am this time residing at ladakh and it is too much cold here... I checked her armpit temperature and it was 99.5... Now I want to know is this fever due to vaccination or due to runny nose... And main point I want to know will this vaccination be effective in her case if she is having any infection...