Coming off the mini pill.

I have been on the mini pill (and nursing my 16 month old) for 3 months. the mini pill made me so anxious and moody. I was always irritated. Isabel has my cycle back with my son since he was 9 weeks old. First month on the mini pill my period came on time. The 2nd month it came a few days late. Then the 3rd month I waited until my period was around “due” so I stopped on cycle day 31. I thought I would start my period right away but I haven’t yet. I’ve had cramping and extremely light (barely there) tan/extremely light pink spotting that comes and goes. I know birth control can throw off cycles, but I stopped on cycle day 31 when my period normally comes (around about). Anyone get off the mini pill? If so, what did you experience? Shouldn’t I have gotten my period?