four month checkup today

[nitewind]

My four month checkup is at 1:15 this afternoon.
I don't know weather I'm just looking for problems or what! My onc sees me every four monthes and it's the same thing everytime.....Checks my scar area, checks for any lumps, says "see ya in 4 monthes". Then I have my blood drawn (I don't even know what for).
I finished with my final herceptin in December of '07.
I know what you're thinking....lucky me. And I know that. It just seems that I read here all the time about everyone having scans and tests to make sure everything is okay and for some reason I never need a scan. God knows, I'm thankful, but I'm scared that something might be going on that I don't know about. If there is anything amiss, can they tell just by bloodwork?
My onc is not the most patient or understanding person, can't really talk or relate to him (good doc, just not a people person). I'm not asking for scans, I just want to be sure that I don't need them.
Am I borrowing trouble or needlessly worrying?
Help please, I need some opinions.