af due in 6 days anyone experienced these symptoms and got a bfp?

Have been having light cramping, sore boobs and sicky feeling but it has been on and off (boobs sore all the time) this has been for the last 4/5 days now... I don't usually get cramping before af.. Just wondered if I still have a chance of getting a bfp? Am trying to hold out testing till weekend at least