Objective of this study was to evaluate the efficiency of location (right ingiunal region [RIR] or left ingiunal region [LIR]) of transabdominal ultrasonography to determine pregnancy and number of embryo/fetus during late embryonic and early fetal stages of pregnancy in Konya Merino ewes. Eighty-four ewes were diagnosed as pregnant 34 days after mating by transrectal ultasonography. Of these ewes, 45 had single embryo and 39 had twin embryos. On days 34 and 50, these ewes were again examined by RIR and LIR transabdominal ultasonography. The results were compared with transrectal ultrasonography and lambing records. On day 34, 62 % (28/45) and 64% (29/45) of single pregnancies and 33 % (13/39) and 28 % (11/39) of twin pregnancies could be detected through RIR and LIRtransabdominal ultrasonography, respectively. On day 50, 88 % (40/45) and 91 % (41/45) of single and 53 % (21/39) and 46 % (18/39) of twin pregnancies were detected through RIR and LIR transabdominal ultrasonography, respectively. Data were analysed by paired simple t-test and there were no significant differences between the days 34 and 50 and locations of examinations (RIR vs LIR). In conclusion, twin pregnancies could not be diagnosed accurately by transabdominal ultasonography during the first 50 days of pregnancy. However, in case counting the embryo/fetus is not important, pregnancy diagnosis can be performed by this method starting on day 34.