My father who is 76 years old he s had medical problems recently he has a sudden pain on the left side above the pelvic bone mostly in the back says it s mild pain achey, He had gangrene of the foot approximately a year and a half ago and has not been able to walk much but the foot is healing miraculously he also is Seeing a oncologist Has been having blood transfusions which now the blood is making enough of that red blood cells. He also said the pain was in the groin area deep inside goes around to the backside and now is going down the leg been going on about three days