Top 8 Ways To Know Your Partner Has An STI/STD

8. Swollen/painful testis
After unprotected sexual intercourse, micro-organisms may ascend into the testes from the urethra hence establishing an infection within the testes. This leads to severe pain and swollen testes. It is commonly accompanied with other symptoms like fever, anorexia, nausea and vomiting. However, swollen/ painful testes should be differentiated from twisting of the testis around its stalk because the latter is a medical emergency that needs a prompt surgical intervention. When you notice this condition in your partner, it’s a sign he’s probably infected.