Early symptoms

Claire
What early symptoms did people have before getting their BFP?
My AF is due in 4 days time. I've had exceptionally sore breasts for over a week which feel heavy and like they belong to someone else! They are so painful that I've had trouble sleeping the last 2 nights! I started feeling very nauseous yesterday afternoon which has continued in to today but has got worse as the day has gone on. The thought of my beloved cups of tea makes me feel ill, food tastes odd and I've got a metallic taste in my mouth. I've got back ache and cramps but not like my usual PMS cramps, instead I've had a few sharp pains then the rest of the time it feels like bubbles in my stack. I normally get sore breadts for a day or 2 the week before I'm due on and cramps for a short time over a few days but this is constant. I keep peeing frequently and when I stand up I feel dizzy and short of breath.
Has anyone else experienced similar?