Problem analysis: Hello, it takes 6-8 days to implant in the endometrium after sperm and eggs combine to form fertilized eggs, and then it takes 7- 10 days for HCG secreted by placenta to enter urine. Adding the two together, it is scientific to test whether you are pregnant from urine after 18 days.

Suggestion: Hello, it is ok to have a prenatal check-up 12 days after the same room, but it should be said that it is still a little early. It is more accurate to wait for the menstrual period to be postponed for about 7 days. I wish you good health.