Bleeding on implantation is usually not a good indicator of pregnancy. The fertilized egg has just been laid, the embryonic trophoblast cells secrete hormones that have not yet entered the bloodstream, so it is best to take a blood test in a day or two to find out if you are pregnant.
The pregnancy test is based on chorionic gonadotropin, a hormone secreted by the trophoblast cells of the embryo, and there are two ways to detect it, one is blood test and the other is urine test.
Bleeding refers to the fertilized egg in the uterine lining has just been laid, the embryo secretes hormones have not yet entered the blood circulation of women, at this time the blood test may appear false negative, it is recommended to check 1-2 days after the bleeding, it will be more accurate, this test is a blood test.
If you want to use urine to test yourself, it usually takes a week after implantation to be able to check it out, and it is best to use the first urine in the morning.