Google Adwords does not directly affect your organic ranking in any way, Google makes a point of that.
You should easily be able to talk to your Adwords representative about any aspect of your paid campaigns (in fact I am surprised that they have not contacted you--I get regular calls from my rep). I am sure that person could also reassure you about the effect of Adwords on your organic rankings.
The phone number for free Adwords phone support is: 1-877-442-0135.