Had A Spinal Nerve Block. 1st 4 Injections. Worked For

had a spinal nerve block. 1st 4 injections. worked for about 4 days. then back hurting again but with severe pain just above my testicles and behind them. after last injestion, 3 weeks later, pain went away then. but after 4 days back hurting and testicles hurting again.. dr says steriods cauing pain.