I was told to do USG Pelvis test?? why is this test required?? I did not got periods last month,I did urine preg test 3 times, 29 jan,4 feb,8 feb all were negative.Doc gave me deviry 10 mg and told to take for 5 days per day 2 pill,she said afte finish of my dosage, with 3/4 days i will get my periods.But she also told me to do USG Pelvis test?? why is this test required?? am i pregnant??? or and major illness???