Incredibly irregular

Kaitlyn
So I was on depo for about a year, and I stopped getting my shot Oct 2014(the last shot I got was Aug 2014) and got my first period late Dec early Jan. I haven't gotten a period until Apr 1.... I have no idea when to even TTC  and when to test for ovulation. Also my period lasted 7 days and stopped for a day then came back. Is there anything I can do to become regular? How many times a week should my partner and I be trying? I'm young(but an adult) and uncomfortable taking to my doctor about this.