Root canal

About a month ago I went to the dentist because my tooth was hurting, causing jaw ache, ear ache and migrains.  The doctor looked at my tooth and said it was very decayed and needed to be filled.  I finally went to get it filled last night, only the dentist found it was worse than he thought and had to do a root canal.  I didn't feel anything while he was working and was pretty relaxed in the chair.  But when he finally finished, my entire mouth hurt.  

It still hurts and I can't open it past a couple of inches.  Just enough to slip some food in.  I really hope it stops aching so I can enjoy my thanksgiving dinner.