Hi Kerry,
I think there is no standard to when the first follow up scan takes place. It really varies from individual patients and doctors. In my case, I had my follow-up tests two months after completing the whole treatment. I was taken care of mainly by my oncologist who arranged all the scan tests once I completed treatment. He estimated that the treatment would have ongoing effects on the tumors for quite a while and thought that in 8 weeks' time, the scans would show a clearer picture of the effects. All tumors gave full response to the chemo-radiation and so I didn't need surgery.
I had to wait for quite some time the results of the scan tests and that waiting period could create greater anxiety too. I learnt to hope for the best and prepare for the worst.
I am sure you and your husband will get out of the tunnel very soon.

Karen