 [ Symptoms ] if a child has had polio vaccine at 2mths 4mths and 6mths would getting ipv at 18 mths harm the child  the child also recieved ditheria and pertusis shots at the same time are there any side effects from getiing the 4th shot prior to her 4th birthday [ Disease ] i agree with your doctor your blood pressure is within normal range for your age one reading is really not enough to make any generalizations so it is important that you get your blood pressure taken several times a month better yet buy your own blood pressure device and take your own readings