是的，有个身边的例证
我妈还在给我喂奶的时候怀了第二个，没有来月经不一定没有排卵。但那个年代只能把我的妹妹拿掉了，然后我妈说，拿掉之后她本来慢慢少了的奶又多了，让我吃到快两岁。
我大老还在喂奶的时候就来月经了，我当时还吓坏了，以为身体出什么问题了
看过书上说 怀孕的时候哺乳不好
貌似是会剥夺还是胎儿的二宝的养分
因为母体造奶是有限造优质的奶出来的 剩下的才给母体给养
貌似physiologically impossible
就算不主动断的情况下怀上了， 过了一段时间也会自然断掉的。 原因是怀孕的激素影响产奶吧。
而且吸奶刺激宫缩， 随着怀孕月份增大， 宫缩频繁会导致流产吧？
话说mm月经恢复了吗？
好像哺乳期没有月经吧。如果没有月经，怎么怀孕呢？
哺乳期不一定没月经，没月经也不一定不会怀孕
事实证明，一切皆有可能。
国际母乳学会算权威吗
给mm贴个链接
http://www.lalecheleague.org/nb/nbtandem.html
柯瑶灵
节录一段
It may be reassuring to know that in a normal pregnancy there is no evidence that continuing to breastfeed will deprive your unborn child of necessary nutrients. In addition, according to the La Leche League International BREASTFEEDING ANSWER BOOK, 3rd Edition 2003, page 407. "Although uterine contractions are experienced during breastfeeding, they are a normal part of pregnancy. .. Uterine contractions also occur during sexual activity, which most couples continue during pregnancy." Also, according to the BAB, page 408, "Currently, no specific medical guidelines exist that define in which situations it may be risky to continue breastfeeding during pregnancy, and prenatal caregivers vary widely in their recommendations." The materials listed in the "Additional Resources" section of this FAQ will help you address the fears others may express.