I just had extremely sore breasts for the last 4 days leading up to AF arriving, i thought i may have been preg but turns out it was AF(it was 5 days overdue)... came off pill 3mths ago too so my body is regulating...
it can be either AF arriving OR early preg symptoms.... they tend to be very similar to each other for some ppl... good luck i hope you get a BFP if that is what you are hoping for!! Test on the day you are due for AF and see how you go??