Let's now explore this window further to find out when was the best time.The egg once released have a lifespan of twelve (12)hours. The egg therefore, needs to be fertilized in this twelve- hour period for conception to occur. The sperm on the other hand can survive as much as 5 days in the reproductive duct. Tribulus is a great circulatory tonic; increases energy and can help build muscle and strength, as well as reduce muscle recovery time. It's a favorite of Olympic athletes and is great all round herb Can lead to the nipple and areola color deepened. 2, Some physiological changes could also result in alterations in large from the nipple. Pregnancy led to increased estrogen and progesterone. Women after pregnancy, Starting from early pregnancy, the nipple and areola color deepened, by turns crimson through the light brown. Some women (under three decades old -45 years of age), the situation in the absence of pregnancy. Nipple and areola color deepened slowly. This color change suggests women have “one off"in the increased estrogen.