hi Doc, my name is Smita.I am 32 yrs old 5"2 and weigh around 60 kgs.I hv always had regular periods but offlate its happened twice in past 6 months that I missed periods (once in Nov 2010 and april 2011).Pregnancy test is negative and my gyneac advised me to take Modus 10 (2times a day)for 5 days and today is my 2nd day of consumption of the above tablets.when should I expect my periods aftr the completion of the course? Internal sonography caused tremendous pain n i cudn't bear it so it cud not be done as my uterus appeared to be positioned backwards ...what could be the reason for the pain when probe was induced deep within me??? will modus 20 harm me in any way?? plzzz give me ur valuable advice, thanx!