Sperm only live up to a maximum of three days. But they also have to REACH the egg which they can do within an hour. Therefore fertilisation could happen in one hour after sex, or if you had sex yesterday, the sperm could be lying in wait for the egg to come to them!
Fertilization
7 hours
21 days
Conception is the moment of fertilization.
20 billion years
The menstrual cycle typically lasts 28 days - but everyone's cycle is different. If fertilization does take place then there is no menstrual cycle, this would continue into pregnancy.
More than an average human
After an intrauterine insemination (IUI) procedure, conception can occur relatively quickly, typically within 24 to 48 hours if sperm meets an egg during that time. However, fertilization may take longer depending on individual factors like ovulation timing and sperm viability. Once fertilization occurs, it takes about 6 to 10 days for the fertilized egg to implant in the uterus. Therefore, while conception can happen shortly after IUI, it may take a week or more for pregnancy to be confirmed through testing.
The menstrual cycle typically lasts 28 days - but everyone's cycle is different. If fertilization does take place then there is no menstrual cycle, this would continue into pregnancy.
lets check it together with proper time measurement
it take 12 to 24 hours
Typically, 4-6 days after fertilization.