My baby is 2 months old. I was breastfeeding but it wasn't going well.... I was mostly formula feeding and breastfeeding at night. She started to refuse a bottle and I am now ebf for a few weeks now and its going much better!

So my question.. I had a period last month (first one since birth) that was pretty regular, but on the lighter side. Especially light since I was expecting a heavy period for the first few months after birth (like after my last baby). According to my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period app</a>, im 2 days late. Could I have gotten a period last month because I wasn't really breastfeeding? And now lost it since I am ebf? Is it normal to have a period or irregular period while breastfeeding ??

I didn't breastfeed my first baby so im not sure what im dealing with here!