Still in shock after wife's initial visit with internist who detected 6 cm mass in the omentum.

So we went to our first GYN appt and got more disturbing news after she viewed ct scan results summary. Her terminology was "this looks worrisome" translates for us to "hopeless". She ordered blood work to look for tumor markers and said she will e-mail results in a couple of days. She was concerned enough to recommend we visit with a GYN Surgical Oncologist who will most likely schedule a major debulking surgery to remove all currently visible cancerous masses to be followed by chemo depending on type of cancer found. I called to schedule the first available appt with the oncologist and was told nothing available until end of March or early April. How quickly does this stuff spread? Is a whole month away typical if something looks "worrisome"? We both really want to jump on this as quickly as possible, but are clueless about urgency from the medical perspective. Any experience and aid about where we find ourselves will be greatly appreciated.