Three days after ovulation, is the odds of pregnancy in the same room large?

Under normal circumstances, after sperm ejection, survival time is two to three days, egg ejection time, survival time is 24 hours, if two to three days before ovulation, to ovulation after 24 hours of cohabitation, pregnancy probability is relatively large. Therefore, if the menstrual cycle is still delayed for a week, it may be pregnant, it is recommended to go to the hospital to see a doctor, check the blood chorionic gonadotropin, if the test results are higher than normal, you can determine that pregnancy, if the test results are normal, you can rule out pregnancy.