Is it possible for my 11 yr old daughter to have aspergers?

Hello, I have an 11 yr old daughter who I believe my have aspergers. She was slightly delayed developmentally when she was a baby. But this was nothing that the doctor's were concerned about. She was/is an asthmatic and was on a lot of meds for this as a baby. As she grew older and began school a lot of other things began to happen. She became know as the problem child in school. The teachers did not want to deal with her and have express this to me. I have gone to counseling, psychologist and psychiatrist. She did and does have a dx of ADHD, ODD, Anxiety. She was prescibe meds (Concerta and Focalin) but made her physically ill. She began to develop ulcers. She doesn't have a learning disability although she retained a grade (behavioral problems). She is really really smart.  She was in self-contained classes but now in general ed. Most of her behaviors are at school. If she does display these behaviors at home that at not as severe as they are in school. Here are some things she does that makes me wonder if she does have apsergers:

Arkward,
not social at all
easily made upset
does not like change in anything and will act out
obessive with certain things, (weather and video games)
does not show appropriate emotions to events or imitates emotions but is arkward
imature for age
relates to younger children
does not have any friends
sometimes flaps

Can you please help me understand? I have taken her to so many doctors and they assure me that she does not have aspergers or they are afraid to even bring up the topic of possiblity.