I was pretty moody when I first started T. I don't remember what it was like around that time. My periods disappeared pretty fast. Eventually everything settled down, and now I feel more chill.
My doctor also started having me inject once a week instead of every other week to keep my T levels more consistent.
I like to think that when you are first starting out on T that the T and E are raging a war inside your body. Then the T just takes over, wins the war. That sort of thing. It might take some time, so don't give up. And if you feel out of control, talk to your doctor. And please do not inject more than prescribed.