Pregnant months after?

Ok so, for some stupid reason I decided to be an id**t and use my neighbors vibrator when I was house sitting for them. I was in a bad place and I know it was stupid to do but I did, and I used it quite a lot every time they would go away for vacation. Last year, around February, I had used it and I got my period late and as worried that I got pregnant from it. I ended up not being pregnant. I continued to be a fool and use it occasionally, and I'm not sure exactly when I used it last, but I think I recall sometime around June or July 2011.? Well this month my period is 2 weeks late, so basically it didn't come. That would be the month of January that it skipped. It's feb 2 now and usually it comes around the 20th but it never did. I'm panicking that I may be pregnant. Is that a possibility? I've noticed some weight gain and cramps, along with the missed period but I know that it could also be from stress and such that I skipped my period. More info : im 16. It was a married couples vibrator so it could technically have sperm on it from one of them. Also I struggle with body image and eating, so I have even restricting my food a bit for the last few months. I haven't lost more then maybe 5 pounds weight wise though. So I'm not skinny enough to lose my period I dont think. PLEASE HELP! And don't give me crappy answers about how dumb I am, because I know and I regret every second of my life pretty much. just help