Hi, Usually I get my periods on 1st on ever month.. for alomt a year but from last 3 months my date are jumping 4 days back or 4 days front. Now my qustion is in the month of march I got my periods on 27 march instead of getting it on 1 april. And in the month of april me and my boyfriend did dry humpering for about 15 mins but on that month also I go my periods exactly on 27th april. Den in month of may it jumped 4 day front i.e instead of getting on 27th may I got it on 1st june.. and now its july and its already 2nd.. i still did not get my periods.. I am worried. Can this leads to pregrancy.. plz help me and answer as soon as poosible..