Ok, first off, breathe. Relax. As I'm writing this and you appear offline so hopefully you are sleeping or at least relaxing. Being tense and anxious will not help your condition.
Now, let's talk.
Hon, I've been where you are. I'm several years past my surgery and I know what a hard time it is. I very nearly ruined my surgery as I was coming out of anesthesia. I had a panic reaction (which I have no recollection of) and started thrashing around on the bed. They had to tie me down to the bed to keep me from hurting myself. When I finally regained consciousness, I was so bewildered why I couldn't move my legs. My surgeon was right cross with me. Though understood that anesthesia panic is not an unusual reaction.
You've just been through some very major surgery and have been under general anesthesia for several hours. That is brutal to your body. Also while you were under you were given several pints of saline to keep you hydrated. As a consequence, your whole body is swollen. That's really ok, because you have kidneys. They will do their job and will bring your swelling down through urination. But it takes some days for it all to work through your system. But the result is that the surgical site will have more swelling because of the body being given the saline and the surgeon working down there. As a side note, your time under GA is about the same time it takes to do a heart transplant. This was not a simple snip and tuck but some very serious surgery and a rigorous ordeal to your body.
A doctors first job is to keep you well. No matter what else is going on. So if your surgeon is saying you are too swollen to dilate, then give it some time and the swelling will reduce and you can start your dilation regimen. You will soon become a slave to your dilation schedule and your dilators. I named mine Homer, Jethro, Big Guy, and OH MY GOD!!!!!.
Yes, if not attended to, your surgical wounds could heal shut. But this is not like getting your ears pierced and having to keep the first earrings in so that the hole would seal shut if you take them out too soon. It would take weeks for anything like that to happen, so a day or two, after taking the packing out and not dilating is not the end of the world, nor will the surgeons good work be ruined.
Let the surgeon guide you, let your body recover from the truly significant ordeal it's been put through. You will be fine.
-Sandy