It's been 5 months since my delivery and my period came yesterday morning . Which was like spotting. I use pad which did not get even slightly red in 12 hours. Only light pink discharge small quantity. Today morning I was having stomach cramps after waking up.I checked and there was red blood spotting. After having bath Again i use new pad and after 12 hours there is no stain in pad.  I am confused whether this is periods or something else and if it is periods then why are the periods not coming regularly. I have never had such a problem before. I am exclusive breastfeeding mom. And i am not taking any medicine right now. Not history of thyroid / pcos / pcod or any other disease.