myquest2009,
I'm sorry that you are not satisfied with your height. However, at your age, human growth hormone will not increase your height. The majority of height comes from an increase in the long bones. Unfortunately, your growth plates have fused, so they (femur, tibia) cannot increase in length.
The use of HGH after the growth plates have fused causes the bones to grow in thickness. This causes a disorder called acromegaly. It affects the face the most. It is often referred to as "acrougly" by some. There have been a few actors with this disorder, one played "Lurch" in the Addams Family movies.
You should use your energy to make the most of your height. No respectable physician is going to provide you with HGH.