Melisa: I doubt that this kind of nursing would affect her fertility. After all, she is having regular menses, so she's probably ovulating. What amazes me is how often people think that not getting pregnant in 3 months is a sign of infertility. 85% of women who are actively trying to get pregnant will do so in one year (some get pregnant in the first 3 months, but others throughout a year, many in the 12th month - all this is considered normal fertility). In fact, in any one month, the probability of a woman conceiving is about 20%. Unless this woman is getting older and there are significant biological clock issues or some other reason to be concerned about infertility (e.g. having had fertility problems with her first), she needn't be concerned about infertility until a whole year has gone by, and she can continue to nurse. If she wants to increase her chances of conception, she can use a basal body thermometer or an ovulation predictor kit to time intercourse, but even with those, it is not a sure thing the first month you try. At the very least, these will confirm that she is, in fact, ovulating. Good luck, Alicia Dermer, MD, IBCLC.