Pain in lower back, buttocks, upper leg.

I was standing in the kitchen and subddenly i felt that something has misplaced from ifs position and after that i cannot stand, i was in a lot pain. Its about 4months before. I saw pysiotherapist for me. But the pain gets worsen. I saw neurologist, he runs me on medicine like vitamins d, b3 and a lot more. I was relaxed. Pain was little. But it was always there. So 5 days back i again went for the pysiotherapist. Everything was okay but the next day. I got the pain like anything. I cannot stand, i cant move, i cant sit, i cant sneeze even. I dont know what i am supposed to do now. I am runing on ibuprofen, pregabalin. But there is not betterment. I find it very difficult to sit for pee. Whom should i consult. I am just 24 . I need help