Why am I sad for no reason?

I've been having such bouts myself lately, and put it down to being a phase, until it got too difficult to deal with. I'm an overall happy and positive person, and I felt like I was losing myself. So I decided to seek help. I would definitely recommend getting checked. In my case, during the course of therapy, we were able to uncover some deep rooted traumas from childhood, which for so many years now, I had just been telling myself, didn't affect me one way or the other, and I was "dealing with it pretty well", until my mind decided, that's it, can't take no more! Sometimes we tend to lie to ourselves in the hope that we appear strong. But it can only go so far. Facing up to our own fears is strength too, and wisdom, and part of growing up. I hope my rant helps in some way

I feel this way constantly. I feel like I am constantly on the verge of crying or yelling. I used to be able to control my emotions better and was an all around happier person. Now it seems that I can't get myself out of this hole. I am constantly tired with no energy and just plain emotional. I feel it's because of a birthday control I was on but I have been off it for over a year and am still feeling this way. Hopeless.