Depending on the mechanism of injury, meniscus rarely happens on it's own, and if you were seeing a GP about this, chances are he hasn't done all his knee orthos and knee history since he/she was in school.
Did it swell? Where does it hurt? there's like 10 mire questions but just so you get the point
It's MRI time
i was at the er. it swelled a little and it hurt alot mostly inside the knee. then it popped back into place(they said the torn part was in the way of the joint) and it felt ok again