I am really sorry for you in this difficult situation. My, and others experience is that you should take these symptoms seriously so they don´t get worse as they sometime do all of a sudden. And then there is a long way back. I don´t want to make it more difficult for you by saying this but when the body is shouting with symptoms as a warning... take care. Cardiologists at the university hospital close to me know that EMF might give high blood pressure and heart disturbances. They have patients coming and going with these reactions. Patients get better when they get into their ER that is shielded but they still often get medicated. The only thing I could recommend is to get a better place to stay at as soon as possible. Without knowing what kind of EMF that are emitted from the AC it is impossible to try shielding. The EMF´s should be recorded first or I think you should look for another website/commumity where people are discussing these issues more thourough. I have heard of problems with AC´s but as they are not so common where I live I don´t remember what kind of EMF and/or radiation it causes. All the best to you!