I wonder why i can't produce tears or feal sad so i can start cry.. i also have a lot of musclespams?

Blocked emotions?: There's a difference between being unable to physically cry and not crying for psychological reasons. If there is a physical explanation for your lack of crying, an ophthalmologist could help. If you're not crying because you are unable to fully experience emotions, a mental health professional could help. In both cases there are effective treatments. A psychological explanation is more likely.