I am a sarcoma patient myself. I have uterine leiyomosarcoma.
Are you being treated at a sarcoma center? If not, you may want to consider changing hospitals. There are doctors that specialize in sarcoma, and from what I have learned it is important to be treated in a place that that sees enough sarcoma patients to be considered a sarcoma center. It is a relatively rare disease, with its own quirks, and therefore helpful to go where they see more cases of them, and have doctors who specialize in sarcomas.
What hospital are you dealing with? Would you like some help locating sarcoma centers?
Many patients go to doctors at sarcoma centers to deal with the treatment decisions. Then the sarcoma doctor coordinates with a local hospital, and then the patient actually receives treatment locally.