I'm afraid you may be right. So far, this is the third year we've had a Zone 7 winter, and we garden right on the line between Zones 5a and b.
I haven't seen any green shoots from our spring bulbs yet, but then, again, I haven't looked all that closely. In the past, when the shoots appeared a bit too early and we had a number of hard frosts following, the shoots turned stiff and blue. I thought they were done for. Amazingly, all they suffered in the end were a few brown leaf tips. So there's hope for your bulbs yet!
Actually, it might be a good thing that your fall bulbs haven't gone completely dormant yet. It will give them extra time to grow bigger bulbs. Here's hoping!