Anyone here ever gotten pregnant while breastfeeding?

Has anyone here gotten pregnant while breastfeeding? I’m 4 months postpartum, got my period back around 2 months postpartum. I was supposed to start my period almost a week ago but haven’t. I know breastfeeding can mess with your cycle or cause you to not have a cycle. I’m not currently on birth control because I’ve had horrible experiences with it in the past. Bf and I usually use condoms but had a couple slip ups last month. I’ll be getting a test tomorrow just wondering how common it is to end up pregnant while breastfeeding?

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