Two BFPs while nursing. No breast changes whatsoever with either one (except milk drying up later on). With DS2, major symptom was EXHAUSTION and ridiculous amounts of bleeding. No BFP until after two weeks of bleeding -- so pretty late.
With this pregnancy, major symptom was strange relationship with food -- craving/abstaining. Exhaustion too, but I had Lyme Disease, so that was a wash. DH told me I as pregnant because I was dreaming about fast food, but because I wasn't bleeding I told hi mit was impossible (I bled both my first pregnanices). In any case, I got a BFN at 20 DPO and a BFP at 28 DPO. Didn't test in between, but 20 DPO is still pretty late for a BFN. (I was pretty sure about my ovulation date this time, and it was confirmed by ultrasound.)