My cycle stayed away for 21 months, then it was 75 days before my next cycle, and they slowly got shorter. I think the next one was about 55 days, then 42?, then 35? ....(something like that), then I got pregnant again. My DS nursed an average of every 2 hours round the clock for at least 2 years. We also did not use pacifiers, we co-slept, and I never pumped (I have a work-at-home job). That was my experience. I hope this next one is the same.