Am I pregnant PLEASE HELP

Hello my periods haven't been regular since I came off the shot , they would come and stay for about 1wk 1/2 then go off then back again but it's been a while since I saw anything but idk when I was due for another since they were already irregular. But my nipples started hurting a week ago for about a week , I've been peeing a lot more often and when I pee it feels like a lot but it's not . I took 3 $1 test and the first came out clear as day positive and the second one you can hardly see the second line and I don't think I see anything on the 3rd one . I'm confused . I also would like to add that for about a week or so I've started to hurt during intercorse