messed up Nuva ring! Am I going to be pregnant?!

I accidentally took out my nuvaring a week early (Tuesday of this week) and have had unprotected sex since (Wednesday he didn't pull out and Thursday he did). I JUST realized my mistake and I'm freaking out. What do I do ?! I can't afford plan b... Plus, isn't it kinda late making it ineffective (or less effective). I'm flipping out ah! Should I just wait for my period next week ?