Do you have a history of depression? Any family history of depression?
This isn't something that's easily answered. It could be depression, it could be an anxiety issue, it could be a hormonal issue.
The best thing you can do is see your doctor so that physical issues can be ruled out. Then, if your doctor feels it's a mental health issue such as depression or anxiety, you can get a referral to the appropriate doctor for assistance.
Just for your informaton, you might want to try this quiz and see how it comes out for you -- Depression Test: Is it Depression or Something Else?
Hope this helps!
its a chemical in balance that needs corrected in order to stop crying
i can just be sitting around on internet and just start crying