Should I still be in this much pain after a root canal?

Hello, please help! I had a large filling on my back lower molar that was leaking my dentist said and it was to big to fill again and he said it needed A crown...After the permanent crown was placed I was having increasing , longer lasting , throbbing dull achy pain around the whole jawline and tooth area. This went on for a bout a month. I called the dentist and explained my symptoms and he said I needed a root canal the tooth was dieing. He called me in a round of antibiodics and I made a apt for the root canal a week out, however the pain got so bad I didn't last until the scheduled apt, bad enough where it was waking me up out of my sleep, had me in tears.

So he called me in a stronger antibiodic and he moved up my apt for the root canal, performed it this last Thursday. Said the tooth was infected and I had a lot of imflammation and it bled a lot during the root canal. He did the root canal right thru my permanent crown. Later that night when the numbness wore off I was in bad pain. It felt like I had gotten punched in my face and 3 teeth yanked out all at once. The pain radiates all thru my jawline and into my ear. even felt like it was in my neck/lymph node. I made it thru the night with a ice packs and a lot of tears and called my dentist the next morning. They said they would call me in a rx for a steroid and pain med to help during the healing process. I started both right away and still no relief. No pain meds seem to help not even a little.

Ive tried motrin 800, aleve, Tylenol 500, and vicodin 750 (from dentist). It has now been 3 days since my root canal still in very uncomfortable pain especially when I try to talk. Cant chew on that side, jawline and ear still hurting bad. I finshed my rx's of 2 antibiodics given to me as well as my 12 pills of steroids given to me...Is this all normal?? I know you can experience some pain after root canal therapy but how much is to much. Its bad enough where I have missed days of work , please please help!