Hello I am doing gym from last 4 months, i had lost almost 16 kg in 3 momths, during the 4th month, i did deadlift using belt of 80kg, that was too heavy, i did 3 set with belt and in 4th set i forget to use the belt ans got injury. Now after 5 days am going for phsiothrepy, everything is fine now but what the problem is, in my lower back when i touch i found 2 moving things on both sides, small like a ball. What are they? I was not having before i guess. Please tell me