Hello. I am a teenage girl, and I had unprotected oral sex with my boyfriend a two days ago. He claims he doesn't have any stds, but I cannot be positive. There was no ejaculation, and his penis was clear of any lesions.He is my first and we haven't had sex through penetration. I performed oral for about 15 minutes. The next day my throat was sore, and I realized I had red spots on my soft palate. I've been doing research and looking at images. There's is no puss, nor white bumps. My throat pain is mild, but I also have a headache and fatigue. I am freaking out! I'm scared to go to the doctor and find out some bad news. My sister was recently sick with strep, and I feel it is a possibility I may have it. I'm not exactly sure what my chances of contracting an std. Can you please help? What should I do? Should I be worried?