My breast are swollen and even before my period. is that normal? they are growing a lot and i am 19

Get Checked: Breast lumpiness and periodic tenderness are normal for some women, occasionally related to a specific time in your menstrual cycle. Breast abcess (infection) is also common, usually just on one side, and needs to be treated asap. You say 'swollen' but i don't know how much, tender, bilateral, redness and more. Getting checked will allow your doctor to know exactly your details.