Yes, you can be pregnant and you may not know it as when you ovulate and when the cycles happen, they cannot predict themselves and they may think it is another cycle and they may not concentrate in becoming pregnant but given at a time, if at a point, a reproductive woman, any age from 15 to 45 years, giving at any pain of time, they can become pregnant if they are sexually active. But if their menstrual cycle is stopping spontaneously, first thing what we can think of is pregnancy. It is the commonest thing what we can think of when there is a case of amenoorhoea. So if pregnancy is ruled out only, we think of other things. It can happen to some regular people. Sometimes the bleeding continue s because of some abnormal hormonal changes and they can have some slight bleeding on the exact day of their next expected cycle ,they might think it is their exact cycle and may not think that they are pregnant. That happens in the first 2 or 3 month of pregnancy. But sometimes when their bleeding is very low and they are not sure about it, they can check if they are pregnant. Pregnancy can also be missed in cases of lactation where they do not have their cycle regularly and they think they cannot become pregnant when they are lactating and because there are no cycles and ovulation can happen randomly and you might become pregnant and pregnancy can happen in premenopausal period, where you have irregular cycles and ovulation can still be happening in that cycles. So please avoid pregnancy during that cycle also. Whatever 15 or 45 years also are prone for pregnancy and whatever reports even pre pubertal girls have conceived and they do not know it especially in the cases of sexual assault, be careful.

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