Sore Boobs

Brittany • Brittany • 24 • Tom is my saving grace. I love you <3 6.30.14 <3
I am on 
Lo Loestrin FE
On last 2 pills (starting tomorrow, these two are the inactive) of pack 2 before starting pack 3. 
My boobs have been hurting really bad and are slightly swollen. 
Is it possible they could be growing?
I'm not pregnant. 
Haven't had a real period since starting this BC. Gyno said this is normal on this brand
Any input would be appreciated 
THANK YOU!