Thanks for the comments I am going to pull this question/comment down. I think I just worry too much. Can a mod delete this? Thanks!
I went through the same when I started - panicked every time it went up more than I expected. It's normal I guess, because at first it seemed unreal to make money off adsense. It sometimes happens as well that new advertisers start being shown, advertisers bid more, or they target your site. Also I think google start to trust a site and show better ads every now and again. Sounds like you're doing all the right things - and they are working. No reason at all to worry, just keep doing more of the same (as long as its legit)! If you want to PM your URL I'll take a quick look see if anything looks wrong, no problem if you prefer to keep it to yourself. Cheers
Just judging by your description, attitude, and tone, it sounds to me like you are just fine. Honest, conscientious, and no funny business. Congratulations! You sound like the kind of publisher that Google likes, and it is starting to pay off. Keep up the good work. Just abide by the Adsense TOS, and you will have little to worry about.