About 9 months ago I had sex for the first time. It only lasted about 2 minutes before I noticed he wasnt using protection so I quickly told him to stop and leave. I'm 18 and I'm very scared of std's. So I asked him 24/7 did he have any std's he always said no I even ask him so much till the point where he gets mad and fustrated and told me to go get tested if I didnt believe him. I have since then developed health anxiety. I've been on google ever since the sexual encounter. I've convinced myself that I've had HIV and cancer and a brain tumor. I cant even say these words because everytime I hear or say them I get really weak and sweaty and anxious. Everyday I wake up feeling terrible and I'm really scared to go to the doctor. I stay up late on google just feeling so much worse. No matter what I do I always think I'm dying soon it's always on my mind I cant enjoy life. I have brain zaps, and my skin itches for about 10 minutes everyday and then It leaves, I have really fast heartbeats of over 110 every day, I havent had any weight loss, I have a rash on my leg, I get sweaty sometimes and hot flashes. I havent had any flu like symptoms even tho I do have upset stomach sometimes. I am constantly checking my body everyday for new symptoms and sensations so I can google it and feel even worse. If anyone has these symptoms when they are anxious please let me know I'll feel more relaxed. I just set up an appointment to the doctor next week but I really want something to take my mind off of this until then