Africans were also used in large numbers for slavery because they were easier to buy. During the beginning of the Atlantic Slave Trade, Africans were willing to sell other Africans as slaves to Europeans because they had their own system of slavery.
You could have sex towards the end of your bleeding and then actually conceive 4 or 5 days later with your early ovulation. The probabilities of getting pregnant while on your period are low, but the possibilities are there. This is not the time to have sex if you are trying to get pregnant.
Women can get pregnant on their period. Women who feel frisky and have sex on their period should keep in mind they can still get pregnant. Women who have typical 28- to 30-day or longer cycles are less likely to get pregnant, since ovulation is several days away, decreasing chances of conceiving during this time.