Depression and periods?

Holly • October 7th 2018 I had my first ever orgasm

Okay so, I have this birth control and I thought it was causing me depression so I switched but I kept on getting depression. I was super sad and I felt alone and lost and I still feel that way. I was thinking maybe it's my period being off that could be giving me a depression, because I'm a happy person I know I'm a happy person I have everything in the world that I could wish for and more, I don't know why am feeling like this I shouldn't be. It's not who I am and I'm trying to figure out what's going on.