How long does it take to find out if you’re pregnant when you have intercourse on the 30th, you should first determine if you are ovulating at the time of intercourse. If in the non-ovulatory period, the probability of pregnancy is relatively small, the probability of pregnancy can not be detected. If in the ovulation period of intercourse, and after intercourse pregnancy, according to the different detection methods, to determine the specific time of pregnancy is also different: 1, blood HCG test: the best time to check the 7-10 days after intercourse, that is, the next month, 7-10 days can be through the blood HCG test pregnancy test, at this time, the HCG content of women’s bodies is relatively high, the test results are more accurate, can be accurately judged the results of the woman’s pregnancy; but some people blood HCG elevation will be slightly higher, the results will be more accurate. The blood HCG will rise a few days later; 2, urine pregnancy test: 17-20 days after intercourse (menstruation delayed for 3-5 days), that is, 17-20 days of the next month, you can use urine pregnancy test; 3, ultrasound: if menstruation is regular, take the ultrasound examination of the vagina, the pregnancy can be detected on the 35th day (i.e., after the 20th day of the following month); take the ultrasound examination of the abdomen, the pregnancy can be detected on the 40th day (i.e., after the 25th day of the following month). The abdominal ultrasound can detect the pregnancy at about 40 days (i.e. after the 25th day of the following month).