My periods have always been irregular, like anywhere from 1-6 months in between them. My lo is now 6 months old and the first 3 periods I got after having her were pretty consistent and a month apart. The fourth one though was a full month "late" and extremely light, lasting for 3 days. I'm a ftm so I'm not sure what is normal while your hormones are readjusting. Could that have been implantation bleeding or is it common for that to happen?