i am 30 year old. weight - 70kgs. height 5' 9". LMP is 18th september, 2011. Urine pregnancy test negative on 5th of november. doctor advised modus 10 tablet for 3days twice a day. i started on saturday morning but missed to take on sunday night. completed on tuesday morning. i was supposed to get my periods by tuesday.one week after completing the dose. i'm confused as i forgot to take on sunday night. please help me.