<s>[INST] I get this cramp and tingling feeeling over my left testicle. bad back and groin pain comes and goes, Sometime feel like something in the groin in contracting. On feeling the testicle I can feel a squidgy bump on one end of it. I have had a urine infection which showed blood and protein recently and was treated with antiobiotics, Have checked to see if it has gone,but there is still a trace of blood in the urine. What can it be? [/INST] Hello, Since you didn't mention regarding sex history. It can be STI. It can be a bacterial infection or fungal infection if not STI. Blood in the urine can also be due to renal calculi, bladder injury malignant lesion. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr S.R.Raveendran, Sexologist </s>