How many days can ovulation test early pregnancy

If the menstrual cycle is regular at ordinary times, generally after the same room, at least ten days or more, you can rule out pregnancy through blood tests and hcg. Or more than 18 days after the same room, after pregnancy test stick detection. However, if the menstrual cycle is irregular at ordinary times, the time of ovulation delay may be delayed. If the test is negative, but there is no menstrual cramps, it cannot rule out pregnancy. You can review it every 3-5 days. Or through ultrasound to monitor. The above health science knowledge is for reference only, the specific situation needs to be checked in a regular hospital, and judged by a professional doctor.