Sunday was my estimated TOM for AF. I noticed a few drops of old (brown blood) in my panties and that was it....no period. Was that implantation? Mild cramping, extremely heavy and tingling almost burning breasts, some nausea, extreme fatigue off and on since June 11th (about two weeks) times ten pms symptoms but come and go except breasts. All hpt since Sunday are bfn. Am I pregnant?! Any advice/input is sooo appreciated and helpful at this time!