Anyone’s cycle shortened and still got pregnant?

I am 37. My daughter is 18 months old. We’re hoping for another child, but we aren’t quite ready yet. I breastfed my daughter for a year, and my period returned around 10 months pp.

so, I’ve had my period for approx 6 months and every month the cycle length has been different. The last couple months, my cycle was 25 days, then 24 days.

Has anyone else had cycle issues and still successful with pregnancy?

Before having my baby I was as regular as can be.