I am going to try to word this the best way I possibly can!!

My daughter is 3 yrs old, and has had night terrors since she was 1yrs old. She will scream out in her sleep.. one time i caught her tryin to climb up the wall, I know that I cant wake her or touch her, but guard her which I do.
The last few nights have been hell, I have taken her sippy cups out of bed because I am trying to potty train her at night, so no diapers, and shes doing well!.. but now she will go to sleep like a good girl but she will wake up and ask a bizzare question for me to find something and then all hell breaks loose, she will first ask to come out of her room to watch TV on the couch, and I say no because she will not sleep, she will stay up. So then she starts crying and screaming, so it becomes a yelling match.. finally I will have to stay at the end of the bed because she will try to run. but now tonight she started to hit herself on her legs and head, she slapped me a few times and then said something about me going on an airplane, so I am assuming she is sleeping. I am not sure what to do about this. I am suffering from lack of sleep because we will fight til 5am. Do I take her to the doctors, I am getting worried now for her health as well as mine! I am so confused because I do not know if shes in a sleep state or actually awake!

Help!