First of all a doctor will not talk to you on this particular forum, you have to pay like fifteen bucks and post it in another forum. As to your question the instances you describe seem fairly low risk for stds. As for hiv, in my opinion, your chances are little to none. Most female escorts do not have hiv. Even if they did you did the smart thing and used a condom during penetration. As far as the few instances of unprotected oral sex the chances are extremely minimal in catching any std from this. Oral sex in general is low risk for stds. To put your fears to rest go to your local health clinic and get a test. Most likely your results will be negative.