Muslim Scholar Ibnu Qayyim said there have 10 crying types:-
1) Crying for love & tenderness heart.
2) Crying for fear.
3) Crying for love.
4) Crying for joy.
5) Crying for the suffering
6) Crying because too sad
7) Crying because feels weak and contemptible.
8) Crying for mercy people.
9) Crying because following other peoples cry
10)Hypocrites crying
actually for me.. crying is one way to reduce our stress. so.. by crying.. our feeling will be more better and calm down..
yes, you may cry..
even, our prophet ever cry..