hello, my son has compleated 3 months and i gave him,hepatitis b,oral polio,bcg,rotavirus,dtp(pentaxin),hib,pneumococcal (2 dose) 3rd dose will be given at 10th may so my question is for 3rd dose should i go for painless or painfull is ok .after that in 7th to 12 m doc will give him flu n measles, what would you suggest painless or painful. thanking you