Really weird cycles

My cycles have been really random lately. I used to have my cycles spaced 30 to 34 days apart. The longest would be 40 days and that only happened once. Then I started having bladder infections and they changed and would go to 40 days on average and then I had one 53 day cycle and I went to the doctors and I was not pregnant, after that I was a little past 40 days and I had been doing everything to get my period to start. Hormonal exercises, drinking boiled parsley :P and nothing started it and I went to the doctors because I had a bladder infection and I mention my periods had been really weird. She asked if I could be pregnant and I said maybe so she did a pregnancy test and it was positive. I had my baby on 10/10/10 and my period started 41 days later, then 27 days and I got excited thinking it would be regular now but it's been 44 days with no period now. I exclusively breastfeed so it's weird for my period to start so soon anyway. That's 3 periods in 5 months.