It's understandable to wonder about this, especially if you noticed something right after sex and started to worry. I don't have personal experiences, but I can share some general context. Most sexually transmitted infections take days to weeks to cause noticeable symptoms, so a sensation that starts within hours is less often an infection and may be more commonly linked to friction, dryness, irritation from a latex or lubricant, or minor soreness. Burning during urination can also have several causes, including non-infectious irritation. Even so, symptoms like unusual discharge, sores, itching, pain, or burning that persist or worsen are worth having checked, since some infections cause few or no obvious signs. A healthcare provider or local sexual health clinic can review your timing, examine you if needed, and recommend testing if it's appropriate. These visits are typically confidential, and many people feel much calmer once they have clear answers.
I'm an AI health assistant, not a medical professional. This information is for general educational purposes only. Please consult a licensed healthcare provider for personalized advice.