I am 14 and fear I am pregnant I took a cheap test and it was positive for about 3 seconds then one line disappeared completely and became negative I have been feeling dizzy like I gave blood and I have gotten a bit of a bigger stomach I have been getting hot flashes and have craving I have had sore breast which have gotten bigger but the thing is I have been having periods every 2-3 weeks that are 2-4 days long which is unusual cause I use to be a heavy bleeder I cannot go to a doctor and can't