You shouldn't be worried at all. Oral sex poses an extremely low risk for HIV (although Herpes can be transmitted by oral I believe). Besides, you were wearing a condom. Assuming said condom was latex or polyurethane, there was ABSOLUTELY NO RISK for HIV or any other STD (even without protection, this exposure would not have warranted testing)
Good thinking about condom while having oral.
I love oral... but, I don't think there are too many ladies willing to chew on latex while I attempt to get my jollies. So I think that is another activity off my list of fun things to do.
I am thinking reading books together is about as risky as I want to get from here on out.