Hi. I Had Sex With A Prostitute About A Month

Hi. I had sex with a prostitute about a month ago. It was protected oral and vaginal. I am very concerned that I may have caught hiv. The last week I have had a very sore neck, my skin on my face and arms looks a lot more red than normal, itchy, little bit of nausea and sweaty armpits with a couple of pimples. I'm stressing out quite bad and worried about heading into depression. What are the chances I have caught it?