Congratulations on completing your surgery, and slowly recovering. The numbess from the neck dissection may go away, mine did, but have arm/shoulder raising limitstions, but I had 5 dissections, but also depends on the extent of the dissection, and what structures were removed, and there several types of dissections, Radical, Modified Radical, Selective, and a few others. Bilaterally, is rough, and usually not done at the same time, from what I heard, due to surgical risks, but have heard others having it done. You can ask your surgeon, and I like to get a copy of the surgical report, and pathology report, which is always good for your own records, future reference, and another doctor may ask.

Good luck.