Only8 months into herceptin and my tumor marker has jumped

[alicecallahan]

I had neoadjuvant A/C and 4X taxotere, right mastectomy,in feb, have been NED and on Herceptin since Jan, asked my doctor to do a tumor marker (CA-27-29) which was 32 before and it came back at 42. Having some scans done in the next 10 days, and totally depressed. A good friend with similar treatment protocol had liver met occur after having been off Herceptin for only 4 months, which is what prompted me to ask the doctor to check....Has anyone ever had a tumor marker go up that has NOT been an indication of metastasis ???
I am prepared for the worst, but hoping there is a possibility this is maybe just a fluke.....