I have no idea but feel soooo bad for you hun. I have had bouts of growing/heavy boobs and that is enough to drive me batty. I can't remember if my boobs grew more in the last trimester but I only got fitted the other day for maternity bras and she gave me some additional room for when my milk comes in - I am dreading to think how much bigger my boobs are going to get! Wern't you able to get colostrum at 24 weeks??? (trying to think back to a thread I read....) Have you tried seeing if anything comes out???