Need some opinions here ladies

Sweetpea • 25 years old. Sebastian James January 11th. 💙👼. Annabelle Sophia💜🎀 due march 23rd
I came off depo in july last shot in april and for the past three weeks my tatas have felt so heavy i feel like im gonna fall over . But my boyfrind noticed about 3 days ago there starting to get blue veins popping up like little road maps. What are the reasons this could be happening. Yes they have grown almost a full cup size in the last month. Trying not to look to far into some pregnancy symptoms ive been having as i know the depo confuses people like that while coming off it but i dont think the veins have anything to do with that hence the reason i need opinions. And go!