1 Assume the pool is used 3 days per week between May and August for ~50 uses/yr max â While there will be some spurts in the summer where kids are in the pool every day, there would be rainy days, travel/vacation outages and other scenarios to even it out.
Pregnancy does not start at conception. Once an egg is fertilized it can take around 6-10 days for that fertilized egg to then travel down the fallopian tube and to the uterus where it can then implant for pregnancy to occur. How long this takes can vary on factors such as where the egg is fertilized in the fallopian tube and overall health. Depending on where a woman is in her cycle pregnancy could occur anywhere from between 6-17 days after sex.
It takes just 38 weeks for a fertilised egg to grow into a baby. However, we say that a human pregnancy is 40 weeks long. This is because doctors calculate the 'estimated date of delivery' of the baby from the beginning of the mother's last menstrual period - on average, two weeks before fertilisation. Only about a third of all fertilised eggs grow into a baby: most are lost before they are three weeks old.