My boobs are big(have been for days now) and sore (they've only started feeling sore though ), my nipples were sensitive initially but now sore, I've noticed that I'm nauseated when I'm hungry, i started having heartburn just a few hours ago and twinges on my lower stomach on my right and lower back at times and that period pain. I don't know if my period is late or just delayed as I'm irregular but i haven't had it yet. I took a hpt at 9 dpo and it was negative but i didn't have all these symptoms by then (only sensitive nipples and cramps which stopped).