(Concern) My thumb hurts ㅜ

Since when, I have been tightly wringing out the dishcloth or washing the mop.

Every time I tighten or squeeze, I start to feel pain and discomfort in the base of my thumb, but these days it's worse with heavy things.

If I try to hold or support it with my thumb, the pain gradually becomes more severe.

Did the ligament stretch?

I used to be sick like this before because I don't use my hands.

It had gotten better.

What could be the problem?