I agree that if you can soak the sponge it may well loosen enough to take it off without disturbing incision. Purchased some sterile saline solution at the drugstore and try to soak the sponge. If you're unable to remove it it is not going to harm anything if you leave it until you see your plastic surgeon.
If gauze is stuck you can moisten the gauze if you are willing to try. If not, do not worry. You will not ruin anything by letting your doctor remove it. It is likely just stuck by the dried blood.
Always best to run these types of questions by your plastic surgeon, as opposed to online consultants. He/she may ask to see you earlier or help you remove the dressing on Wednesday. Best wishes.
If you're having difficulty removing addressing that I would advise you to do one thing. First thing is just to dampen them with a bit of saline solution and see if you can remove them. You cannot remove them after dampening them with saline solution then wait to see your plastic surgeon.
I usually have patients shower after a few days( unless they have drains). In this case the water will loosen them up. But it is always best to ask your surgeon.
Already Tuesday so leave until you see your surgeon in a follow up visit. Stuck gauze can be removed by washing with sterile saline....