Saying no to the bra!

Okay, so I'm not 100% sure how far along I am. But my boobs are absolutely KILLING me 😩 my bra was too small to begin with, but man, I'm so uncomfortable. They definitely didn't hurt this much with my first two pregnancies. Hoping this is a sign things are going good! Also, is anyone else getting dizzy when they stand up? And feeling short of breath after not even doing anything?