Pain in lower abdomen left side.w

Pain in lower abdomen left side; along with lower back pain in the centre. Ultrasound of whole abdomen showed up nothing but simple prostatic cyst of size measuring about 1.2X0.8 cm. It started while doing weight lifting of 90kg in gym. With a sudden jerk, pain in spine started. We've consulted neurologist and orthopaedic doctors for treatment. Even though the pain was not decreased in 2 days but afterwards stomach pain started at lower abdomen left side. So we took him to gastroenterologist. He suggested some medicine. But it doesn't showed any effect on him. He goes to gym everyday and practices with 90kg weights. But now he is crying because of pain (unbearable by him). All the blood and urine and ecg's and x-ray also came clear (No sugar or bp, everything is clear). In case of emergency doctors are giving him jestin injection to relieve the pain. And to make him sleep in the night they are giving restil tablets. Those tablets are working and he can sleep all night but in morning w