Could it be something besides an STI after sexual encounter?

Hi I wonder if someone can help me I had protected sex with woman like 5 days I became ill body ache chill abdominal pain vomiting and diarrhea it’s been 1 year and 5months since that encounter and symptoms developed after groin/pelvic pain testicle pain strotum redness whole body fatigue dry skin bad acne like my skin barrier been compromised I test for all STDs months apart all have been negative hiv,sphyilis, gonorrhea, chlamydia, trichomonas, urine analysis, urine culture, HSV one and 2IGG all have been negative so what I don’t understand is this problem I’m dealing sex related or something else? Or I haven’t done the right test yet