Whoa! This is way out of line. Way way out of line. My mother has taken my medication before, but because she wanted it for herself..... NOT because she didn't want me to take it.

That medication was prescribed for you by a medical doctor who thought, in his/her professional opinion that it was indicated for your symptoms.

Suddenly stopping this med is not a good idea.

Get out of that house. Call your pdoc or your local pharmacy and get help.

What your mother did was unethical, likely illegal and way way way out of line for any one to do to another human being.

Get out of that house, do the right thing for yourself.