Simply hormonal changes drive changes in a persons sex drive throughout their menstrual cycle. Hormonal changes also drive neurological changes that see womens senses being increased during menstruation, and the brain can also incorporate increased vaginal lubrication from menstrual flow as increased lubrication when aroused. There are also some cultural factors such as the idea of sex during menstruation being a little taboo, which can drive increased arousal for some.
Its the hormonal imbalance that is associated with your menstrual cycle. I know I get horny when I get near my period and I did a little research and what I remember about it was that because of the change in hormones to trigger the actual period causes testosterone to be at higher levels. Don't worry...women have testosterone and men have estrogen, just in lower amounts. That is part of the reason guys have such consistent sex drive, the higher levels of testosterone. But that is another answer to another question. So although its not shown in all women, its normal.
While on birth control, your periods should last just as long as when you're not on birth control. Some women regularly experience 2-3 day periods while other women can regularly experience 6-8 day periods.
she horny! she horny! she horny! she horny! she horny! she horny!
No it is not.
It isn't a period, here is a useful article: http://www.drspock.com/article/0,1510,6004,00.html
With some women, after menopause (when the body stops producing eggs and periods stop) a change in hormone levels may cause sexual desire to be less. However, many women will continue to be interested in sex as long as they are in good health. There is no magic age where women lose all sexual desire. While this may be a shock to young people, there are folks in their 80s and 90s that may still be interested in sex. Different ages for different people.
Maybe they are turned on from the woman's volumptuous body during pregnacy. Maybe some of them is just more horny when their partner is pregnant. Maybe they just like making love to their partner.
It depends on the individual. Some women may be comfortable with a partner who expresses their desires openly, while others may prefer a more subtle approach. It's important to communicate and respect boundaries in any relationship.
Most do not have a period during pregnancy but there are some that do. Check with your gyno. Could just be hormones.
While it is rare, some women do continue to have periods (I know a couple). Most likely is is heavy spotting due to being pregnant. That is much more common.
Some women say they are sore, other women experience soreness with periods.
All women are different. Some women with endometriosis will not have regular periods. However, there are also women with endometriosis that either have irregular periods, or even those that have very regular periods. If you think you may have endometriosis, see your OB GYN.
Just say you are making her a big stew of horny soup and she needs some