I don't! I tore pretty badly after our first was born, so we weren't really having intercourse until my period returned (because of topical estrogen cream to help me heal). With our second, I was using an Ava fertility tracker bracelet, so I'm not sure if the signs were there or not. I was also pumping for our son, so I'm sure that brought my period back earlier than if I had been nursing. I had two weird postpartum periods fertility-wise.
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