I have been on tri cyclen lo for about 5 months now and am experiencing extreme moodiess.
In the first month, I had spotting for the entire month. The second month, my boobs swelled up and hurt, I had really bad lower back pain for a good week before my period. The third month, my period came 3 days into the placebo pills (which made me thing i was pregnant because It always came on the first day of placebo before that). The 4th month, I got ticked off at small things, but it was still manageable. My boobs still hurt for most of the month. The 5th month, I blew up at a coworker and quit my job. Spent 3 days crying straight, and when I finally got to come home and see my bf (because my job involved travel), I flipped out on him. So I think the moodiness is actually getting worse. And since I'm a jerk, I am depressed and don't even like myself. Birth control is the devil.
I heard from a couple girls that the nuva ring may help with the moodiness, so i'm going to ask my doc and maybe switch to that. Otherwise, I'm switching to another pill.