7 weeks

Caitlyne • Bonus mom to 2💜💙 Bio mom to 1 💜
So I'm only 7 weeks today but my boobs kill and both me and my SO have noticed they've grown... I'm noticing today my nipple is starting to fall out of my bra when randomly (sorry if tmi) 
Is this normal this early on? 
Should I get some new bras yet or wait?