I’m scared

I honestly think i’ve contracted an STI. I already made a appointment w a CVS min clinic to see in the morning but I literally cannot sleep. I know it’s kind of natural but i feel so gross. Honestly it also scares me that I was safe, but the condom broke. My throat hurts and that was my #1 red flag along with off color and burning when peeing. I don’t plan on telling anyone in my life so i need it off my chest. Has anyone been through similar, how did you move on? I feel disgusting.