I dirive a nissan altima, lately, my car has been vibrating. It's getting worse by the days. What's Wrong

It might be alignment it could be something wrong with a tire. THe best thing is to get it looked at. My car vibrated and I found out I had messed up the penger tire embly bad and one good pot hole my tire would have come off. Alignment is like 20 bucks or so depends on shop everything else it goes up. But seriously get it checked. In NY if your car is bad and causes an acciden you are liable.