I'm 22 years old and slightly overweight (i am dieting and exercising at a normal healthy rate to correct this). i recently quit my job in the midwest and moved 1000 miles to the Colorado mountains and since then i haven't had my period (I've missed two now). I have taken seven home pregnancy tests (all first morning samples) and they have all been negative. My period usually varies slightly but it always falls in the last week of the month. My weight has never affected my periods and while moving here was stressful, stress has only ever delayed my period but never stopped it. Thank you so much for your time.