Calling all breastfeeding mamas!

katey
My son with be 5 months old next week. I breastfeeding and pump while I'm at work. I got a really light period/spotting in January and just started a full blown period on Sunday. It was a 38 day cycle if the spotting in January was an actual period. Have you ladies gotten your periods back yet. Why is mine back so soon? Does this mean I am fertile now (well in a few weeks)? We would be ntnp (not trying not preventing) so being fertile would be kind of nice. Thanks ladies!