Elevated Tumor Markers

Hi Everyone.  I'm new to the group.  I've been clean for almost 8 years with perfect panels except my vitamin D has been consistently a little bit low.  I just went for my 6 month check up, assuming everything is fine (like always).  Prior to the bloodwork, I had  a mammogram on both breasts (perfect) and a visit with my breast specialst who said my boobs were great! :-)  Met with my oncologist 2 days later and had bloodwork done.  She called 2 days ago (8 days after the bloodwork) to tell me she was ordering a PET scan due to the fact that my tumor marker is at 57.  Apparently she's been monitoring this all along and it has been in the acceptable range every single test since the beginning.  I don't know what my other marker levels were before, but it's 57 now. 

I'm 41 years old and have been fighting tooth and nail to get back to some semblance of a normal life since Valentines Day 2007 when I was diagnosed.  I decided 10 months ago to move to Florida and live at the beach.  If not now, when?  I've been working 2 full time jobs, 16 hours a day for the last year to pay off all debt, get my house in shape to rent out and save a pile of money so there would be no worries when I relocate to live my life-long dream of palm trees and sand.  Of course, now this happens.  She didn't want to repeat bloodwork.  Of course, my share of this (due to my crappo insurance) is $1152 due when I arrive on Monday.  I asked about alternatives, she said it would be just as expensive (CT on all areas, etc.)  I owe this woman my life and I trust her completely.  She's doing this because moving day is December 30, and she asked if I had reoccurrence, would that change my decision to go?  Well, OF COURSE IT WOULD!  I would have to stay in the terrible job I have with the crappo insurance to make sure I could cover the medical bills.

She did say that these tests give a lot of false positives.  But she doesn't even want to wait a couple of weeks.  She called on Wednesday and the test is scheduled for my first day off, Monday.  I've been reading the posts on boards here of people going through the same thing.  I can't tell whether to convince myself that the cancer has returned or that it's an anomaly and nothing to worry about.  There are a lot of crying jags happening and I can't tell my loved ones because I don't want to scare them.  I've seen everything on these boards from "my doctor doesn't use these tests because they are notoriously unreliable" to "it was nothing and the marker came right back down" to "I was a 10 year survivor and the elevated marker (numbers lower than mine) proved to be spinal cancer".

I guess I'm just hoping there are more people out there who have been through this recently who can give a little more information and share some more stories that resemble mine.  Any information would be greatly appreciated.