Difficult as it may be, I would try to take a deep breath -- and -- I would definitely not pursue any surgery at this stage.
If you want to explore medical causes, I would strongly encourage you to go to a pediatric endocrinolgist for evaluation. In addition to doing some blood work for hormone levels, he or she may also order some straight-forward genetic tests. Hopefully you have this type of specialist nearby; if not, I would suggest you make arrangements to see one in a neighboring city. If you cannot do this immediately, you could also get another opinion from a different general pediatrician. But, I woud still push for the sub-specialty consultation.
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