hello! my last LMP was august 20 , i am expecting to have my menstrual cycle by the 20th of september, after 3rd and 5th day of delayed menstruation i decided to have a pregnancy test (it showed negative twice). so after (september 26), i went to an ob gyne doctor, i had a trans-vaginal ultrasound , she said that i ovulated last week ( which was supposedly my menstruation day), i was confused. never had i experienced any delayed menstruation. it always between 28-31 days cycle. i wanted to know if im pregnant or not as early as possible, so she prescribed me with duphaston. question:1) when the doctor said that i ovulated third week of september, when can i perform an hcg urine test? 2) while taking duphaston, i could feel that some symptoms of about to menstruate is heightened, is it an indication that i am about to menstruate?