I have Google AdSense on one of my website and every thing is going quite smoothly. I checked the reports today and i noticed that there was a spike in the Adsense clicks few days ago for a particular country. There were just about 20 impressions from that country and there were more than 12 clicks. I am worried about this and want to ask other web masters that what is better to do in these circumstances.

I am asking this because i do not think any body can click on google adsense ads 12 times when only they have 20 ad impressions. Please guide me that should i contact google and tell them that i noticed this invalid click activity or am i just fine and they will do the income adjustments at the end of month by not paying me for those Invalid clicks and impressions.