Period cycle is unstable

Hi mommies out there, just wanted to ask whether your period cycles were constant after you got your first period? I had my period after about 4 to 5 months after giving birth and it's really inconsistent. I had my periods somewhat every month or after 33 to 35 days but this time it's so very late. My cycle is just so screwed up and i don't have the feeling that i am pregnant. I am also still breastfeeding baby 2 to 3 times a day. Any opinion?