Shouldnt the test line be darker than that? ive had in the past and also seen much darker positive test line.. i feel it is impossible for this to be true since i am 4 months postpartum and exclusively breastfeeding and i usually get my period back around 10 months postpartum.. also i usually have pretty strong ovulation pain when its close to and on ovulation day and now nothing. What so you guys think? can an opk give a false positive while breastfeeding?