Originally Posted by ginah
I want to clarify something here based on medical know-how about fertility as RN.
1. You are only fertile for about 24-48 hours... not more than that.
2. "X" sperms (girl) can survive for up to 72 hours. They are larger than "Y" for baby boy, they swim slow, they can survive vaginal acidity and still be viable 4 days later.
3. Boys sperms can survive up to 36 hours. They are smaller, have long tail, thin cell wall, swim faster, easily die, are many than X sperms, cannot survive vaginal acidity for long.
You can conceive if you had sex 3 days before ovulation (72 hours) and even after ovulation, your ova can last for 36 hours before coming out. Makes sense?
I'm sorry, this isn't true. Multiple people have documented that sperm can live up to 5 days in fertile cervical mucus, and under absoultely ideal conditions they might make it longer than that.
Most eggs are gone within 24 hours, and Toni Welscher says the average is closer to 12 hours. Given that it takes sperm up to 6 hours to swim the distance to find the egg, the later after ovulation actually happens that you have sex, the less likely it is that fertilization will happen.