Im having pain in my lower back for 3 months now. When I try and get up it seems that something is getting stuck and it takes time for me to come to normal standing postion as a result.Even Im not able to bent my back backwards.Morning when I get up there is so much tension in that area. I really dont know what and where is the exact problem maybe close to L5-S1.Pls suggest is it severe ,any cure,exercise for this problem.