Sore breasts

Samantha
I'm 4 wks and 5 days pregnant today and my bra that I just got at Christmas time (and fit perfectly @ the time) now hurts to wear. My boobs are sore and tender and even my hubby agrees that they are larger than before pregnancy. My nipples appear larger around too. I didnt expect this so early. Is this normal? This is my 1st pregnancy.