Give yourself time, you're 3 weeks out, healing takes a while. I did not have neck dissection but did have radiation to the neck and tongue. I am 3 months out from rad and still feels weird. You just had major surgery to your neck, so it will take a while to settle down. Therapy might help, ask your doctor. There are local support groups that meet all over the US, if you feel talking to survivors would help. https://www.spohnc.org/local_chapters.php Hang in there and always come back here to ask questions.