I am a 51 year old male from Belgium. 3 weeks ago I had brief unprotected vaginal intercourse with a woman from the same town. She is married, has 2 kids. The act did not last long as I did not want to finish. Afterwards I did not worry at all, as I thought it was almost a non-event. But 12 days later I developed some strange and worrying symptoms. I developed a sore throat with on and off headaches. I also had some rash in my neck, probably linked to my soar throat. I tested negative on Covid. In the following days I developed some other strange symptoms: Swollen lymph nodes in neck, elbow and knees. Itchy pimples/bumps on elbow and knees. I felt feverish, but my temperature never got over 37.5C. 7 days later the mild sore throat and headaches are still there. I am not really sick, but I am also not felling well either. 

I am requesting your opinion/guidance,

I hope that these suggestions are helpful. If there are additional question or I have missed anything, please use your up to two follow-ups for clarification.  EWH