Breastfeeding and menstruation

Any ladies on here breastfeeding and have your cycle return? My baby is nearly 8 months old and my period returned when she was 5 months. That's when I quit taking the mini pill and started tracking my cycle to avoid pregnancy with this app. I'm not sure if I should expect my period to be as regular as it was before. So far it's been between 24-28 days long (before it was always 26). Also if been ovulating quite late in my cycle, around days 16-18. Before I'd usually ovulate day 13 or 14. Are these changes normal because of the hormones involved in breastfeeding? Will it go back to my previous normal eventually? Any help appreciated!!