From CANFP
Return of Fertility While Breastfeeding
By Ron and Andrea Gronsky
Jan 16, 2007, 11:09
Question
How likely is it to have ovulation before your first period post-partum if you are breastfeeding and pumping (pumping starting at 4 weeks)?
Also when should you start temperature checks?
Aimee
Answer
Dear Aimee,
A mother who is nursing on her baby's cue around the clock, with no supplements or pacifier use, can expect the following reduced conception rates, even without observation of any fertility signs:
--- almost 0% in the first three months
--- 1% during the next three months
--- 6% once solids have been introduced around six
months, until her first period
Any variation in this pattern of mother-baby closeness and frequent breastfeeding will increase the likelihood of ovulation, and possible conception, before the first period, as well as the timing of the first period itself. If you are using your pumped milk to bottle-feed your baby at times, you should resume all fertility observations and charting,including temperatures.
Andrea and Ron Gronsky
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