It seems like the tooth I had crowned is hurting ㅠ

I have a tooth that was crowned, but it seems to be hurting more and more these days.
This is a tooth that has never undergone root canal treatment, but lately, I feel it when I drink cold or warm water.
The part of the tooth where I had a crown felt sore and painful.
In this case, should the crown be removed again and proceed with root canal treatment?
If that's the case, then discard the existing crown.
I'm wondering if I need to pay again and get a new crown.