I'm having increasing difficulty opening my mouth post-tonsillectomy. Did anyone else have this issue? Does surgically triggered trismus resolve on its own?

Thanks --

53
T3N2aM0 HPV+
5/26/13 discovered painless superball-sized lymph node in neck
6/26/13 DX SCC R palatine tonsil
7/16/13 TORS tonsillectomy & selective ND, mets to 2 nodes
9/3/13 Cisplatin and rads begin, tolerated 1.5 of 3 planned chemo doses
10/16/13 Treatment ends
Dec 13 Ulcer appears at surgery site
Jan 17 Biopsy -- no cancer!
Feb 17 CT/PET Scan lights up tonsil bed & nasal cavity, docs say probably inflammation, don't panic, rescan when ulcer subsides