Yes, you're able to get pregnant if your period lasts for 3-4 days. How long menstruation lasts doesn't impact whether or not you can get pregnant, what matters if ovulation and the fertile phase. If you want to avoid pregnancy then always assume you could be fertile and use Birth Control.
Cats do not have a period like women do. They do go through "heat," which can last anywhere from 4 days to a week. This is when they are able to get pregnant.
no
Yes, the last days of your period can overlap with ovulation.
7-10 days after your last period started
no no
Yes
Yup
Yes, your prime time for conceiving is 10-14 days after your last period.
no you do not get a period if you are pregnant but that does not mean it is okay to have unprotected sex on your period sperm can live for 10 days
Neither, about a week after your period ends is normal.
No. If you are pregnant, your period will not come until you have had the baby.
Yes. Counting days is very unreliable as a means of contraception.