2 skipped periods while breastfeeding and 16 months pp?

Cheyenne • I an 27 and I have a 3 year old boy, 6 year old boy, a 7 year old little girl, and 16 month old little girl

Has anyone else experienced this? I got my period back around 12 months pp. It was regular for 3 months and then I skipped 2 periods and had a random bout of super light spotting for 3 days and then nothing. I’ve now not had a period for over 3 months. This is my 4th baby and 4th breastfed but with all the others once my period came back it was regular. I’m not on BC or anything either to throw off my hormones. Anyone have any insight?