I've been having brown spotting and AF like cramps for three days but no period. Currently breastfeeding my 18 month old so that may have effected it? I think (but I'm not certain) that I ovulated 9 days ago (had an almost positive opk then it went back to super light). The only other time I've had brown spotting was when I was pregnant last year with the baby I lost. However my hpt was negative tonight but I have a very dark opk. Opinions? Anyone have similar experiences?