Boobs - questions for experienced mamas

So my boobs have become ridiculously large to the point where I'm super self conscious and kind of grossed out by them (I grew 2 cup sizes and a band size.) But not only has their size drastically increased but my nipples have gotten HUGE. My areolas have grown to probably 3 times the size they were before and gotten much darker. I'm scared of how much bigger my breasts will be once I begin breast feeding. Do your boobs ever go back to normal size? Or at least get a bit smaller? What about the nipples?