I dug through the old records on stat counter and found two clicks on my ads that came from my IP about 7 weeks ago. I don't remember clicking anything though. I looked up faq and it says not to email them every time a click slips through or something. Should I do anything?
Yes. It says that it is not necessary to email them if you click on your own ads once but I strongly suggest that you email Google immediately that you have clicked your own ads in an error. Else, your account might be banned upon investigation later. Why do you want to take a risk unnecessarily? All it takes is 2 minutes of your time to email them!