Yes, you're overreacting.
Next time hire another escort and test him before sex, I'm sure you'll worry about something else even if he tested negative right in front of your eyes.
http://2.bp.blogspot.com/-H_oTRCKbvQo/T_VUgIky6qI/AAAAAAAABlg/n5_N1JcpCkQ/s1600/oraquick-hiv-test.jpg