I'm 26 yrs, married for past 10 months. I normally get my periods on 28 days cycle however this month i crossed 28 days an my periods is yet to start. I've never had this problem before except four months back (on nov'2009) i missed by a couple of weeks. when i consulted a gyno doc she gave me urine test for pregnancy, which was negative. within a week my periods started. I requested my doc to check my physical ability to conceive as i had a doubt if i can conceive. everything was fine except for IGG Rubella blood test which was 9 on count normal being 15count. i took a vaccination and i was advised not to conceive following three months. feb 2010 being the third month i thought for preparing myself after this months period which should have come on 1st march (as per 28 days cycle) but its yet to come. now I'm confused if there is any problem in my health? Please help