I'm only 16 and just started taking birth control after ending an unwanted pregnancy with an also unwanted abortion. I'm on the last of my 3rd pack of Tri-Sprintec birth control pills and I've searched and searched but haven't gotten a good enough answer.

So, are menstrual cycles light on these pills?

I had unprotected sex with my boyfriend before starting these pills, and I got my period, then started the first pack, got it again, then went to my second, then when I got it again it was Really light and lasted about 3 days. Now I'm on the end of my 3rd pack, and I haven't gotten my period. Am I pregnant or are light, or even no periods normal on this pill?

PLEASE HELP!!! I DONT KNOW WHAT TO THINK OR DO!!! :'(

Also, does this type of birth control cause depression?