Not sure how true this could be but I was googling breast feeding and TTC . I know I'm up way way late researching stuff about fertility , I'm hopeless lol .  But I saw several women that were bf exclusively on baby center saying that they didn't get bfp untill way later then expected bec it took longer for the hcg to build up because it was getting secreted into the breast milk . Like I said I don't know how true this is but a good amount of women were telling their stories and how it took longer to show up . It'd made me feel hopeful . AF was due today and nothing yet , I haven't retested though .