Sore boobs- AF due tomorrow

Samantha • We are expecting baby girl #2 on 10/31! Can't believe the changes coming!I work full time as a Vet Tech and live in Maine.
So the past week and a half I have had wicked sore boobs. Lastnight was the worst- I usually do not get this when AF is coming. If anything, iay get slightly sore ones from a change of a bra, but haven't worm a different one then normal for a while. 
​I am really hoping this will be our month, but I don't want to get my hopes too high. My temp has stayed higher, and I haven't had any cramps like I usually get 2 days before. Took a test (walmart $0.88 ones) today though  and got a BFN :( only time will tell...just wanted to be able to chat with others going through the same things. We are on cycle 5 of trying....