Hoping I'm pregnant !

Brittany • Christian Mother , & wife ,baby number two Due march 27th??
I hope so every month , but I had a positive opk on the 7th , my boobs are sore .. And Ive had cramping on and off , also my right breast has developed a knot in it sorta above my nipple. I'm weaning my son, but I'm not engorged at all . No idea what if could be !