Depression and the female cycle

I wonder how these two are related. It seems that every couple of weeks, I get very emotional and I cry a lot about a lot of things. I wonder, I wonder, I wonder... Well this last time it seems more things than that made me upset. Some classes have been weirdly frustrating... In fact I just need to get a stress ball. I have no idea if it wouldn't exacerbate the 'Carpal-tunnel-like' symptoms I've been having in my right hand... Anyways.... I'll be back with an update. New things are definitely beginning over here.