Mine came back 21 months pp whilst breastfeeding. I hear there's a very wide range of normal for when they return. They did come back as they always were after they returned except my cycles were consistently longer (but I have always have long and irregular cycles).
I'm almost 28 months pp and I still haven't gotten anything back. I'm not on birth control though and we still breastfeed at night
My son is also 22 months now . I got my first period after 14 months of pp . My first 3-4 periods were very light (but more than spotting ) , maximum 3 days long and cramps plus pain . Now I have normal period , less cramps more flow . I am still breastfeeding. I would suggest to do some exercise and hot water bath . Helps to get period fast .