Hi, im Dr.vasanthi,29yrs married girl. I hav 20months old daughter. I used to hav regular periods exact after 28days . and my last LMP was 1st january 2014 but in feb till today i didnt get my period. And UPT also showing -ve. Gynec prescibed Regesterone 5mg for 5days. I want to knw wat was the problem. and when can i expect my period after taking regesterone. reply me im so worried and we want second child also.