i got married about 3 months ago... after 5 days of marriage i got infection,doctor said it is common after marriage,then i got periods first time after marriage. then i havent got periods and after 20 days of the date i got it...... i have done pregnancy test but it was negative. now again i havent got periods after 10days of due date. what should i do now? 4 days before i have done test but it was negative.my age 22 years,hgt 5 feet 2 inches. wt 55kg,i feel slight lower back pain from last 12, 13 days. waiting for reply. thanks