It is possible for a fertilized egg not implant in the uterine lining, it could be due to stress, certain drugs or medications, or that the egg was not viable. This situation is very common, possibly happening to a third of fertilized eggs.
ectopic pregnancy
A positive pregnancy test result can be caused by the presence of the hormone hCG in the urine, which is produced by the placenta after a fertilized egg implants in the uterus.
Houseflies have six pairs of chromosomes, so when two houseflies are crossed, there are 2^6 possible combinations of fertilized eggs that can result from the random lining up of the pairs. This gives a total of 64 possible types of fertilized eggs that could result from the cross.
It is possible, but not as likely to result in pregnancy as intercourse.
Yes, a negative pregnancy test result typically indicates that you are not pregnant at the time of the test.
No
yes
No, sperm in the colon will not result in pregnancy. However, the fact that the sperm is there shows close proximity to the areas that do result in pregnancy.
No, semen should not affect the result of a pregnancy test. Pregnancy tests detect the presence of the hCG hormone in urine, which is produced by the placenta in response to a fertilized egg implanting in the uterus. Semen does not interfere with this process.
The initial possible outcomes of single embryo transfer are impltanation or lack of implantation. The fertilized egg could divide into monozygotic twins (or more) subsequent to fertilization and result in multiples, or a single birth could result.
If you check before 2 weeks you wont know if the result is right or not.