Wisdom tooth 4/7 extracted. Pls tell!

Hello doctor Age 32 1 month ago wisdom tooth extracted that is 4/7 ending tooth. And 4/8 teeth done root canal and placed a crown cap in area dental trust hospital charges rs 1500 done No pain some days in November 2nd week I done removed later i feel good but all of sudden since 4 days am having pain feeling in same teeth which is placed a crown cap And still am having numbness and tingling on lips doctor said its recover in a month and written nirvogen tablet but month is completed and sudden now am getting pain as well with even if I touch in chin area and lips area my nerves are some feeling internally something Pls advice what to do main concern is why pain feeling. The major pain is night time when I bite feeling pain and unable to eat and bite in that side pls advice what is reasons and solution Can crown cap will be removed and place again same pls tell thanks Thanks