Breastfeeding period did not come menstruation with sex without contraception can you be pregnant

Lactation does not come to menstruation with no contraception does not rule out the possibility of pregnancy, because women in lactation by the body estrogen and progesterone influence, will lead to late menstruation or not to menstruation. But even if not to menstruation may also appear ovulation phenomenon, so in lactation sex life and do not do a good job of contraception, there will be the possibility of pregnancy.