Hello Thanks for your query,based on the facts that you have posted it appears that your boyfriend has acute retention of urine which could be due to spasm of the sphincter urethra secondary to UTI or due to stricture urethra (Narrowing of urethra ) . This can not be managed at home and he has to go to ER to drain his bladder by doing urethral cauterization to relieve from pain due to distension of urinary bladder. Please get his routine urine test and urine culture done to find out the organisms causing this infection and antibiotics to which they are sensitive to. Please ask him take broad spectrum antibiotics like Cefexine along with urinary antiseptic like Nitrofurantoin twice daily and urine alkaliser thrice daily.Later on switch on to appropriate antibiotics as per culture report. Get the prescription of medicines from your family Physician. He needs further evaluation to find out the cause of retention of urine and further treatment that depends upon cause of his retention. Dr.Patil.