 [ Symptoms ] i recently got a rash on one side of my face could a change in birth control pills be causing this rash [ Disease ] i would go back to my md and tell him to take some blood work the first thing you need to rule out would be if she is anemic which can easily be taken care of by giving her iron supplements my grandaughter is very big for her age as well she is 3 and very large however she is very active if you do not feel like your doctor is answering your questions or taking your concerns seriously i would get a second opinion she is most likely just fine however there is no reason for you to have to worry about it constantly and you just need to tell your md you expect some answers