All are things I had post surgery. Many get better over time, some take quite a bit of time. The swelling should go down, you can help it by lymphedema massage, lightly stroking the surface of your swollen skin towards the chest.

Mark, 21 Year survivor, SCC right tonsil, 3 nodes positive, one with extra-capsular spread. I never asked what stage (would have scared me anyway) Right side tonsillectomy, radical neck dissection right side, maximum radiation to both sides, no chemo, no PEG, age 40 when diagnosed.