Sophia, it sounds like you have been and still are going through an upheaval of your normal life.
Involuntary muscle contractions followed by heavy sleep sounds like a seizure, but it's always difficult to tell. I can certainly relate to how it feels after a seizure. How did you feel when you woke the next day? Usually it takes a while to feel normal again.
Unfortunately, other than a general recognition of what you must be going through with a possible seizure I don't know if I can be much help to you. I know how frustrating physicians can be, especially when it doesn't seem they are helping you very much. It sounds like you are taking good care of your health, and are seeing your doctor, so all I can say is to have patience until they can determine what they need to do.