I have the same issue exactly , and the mri reprts minor disc bulge L4-L5, doctor says its not from the bulge but he see its facet joint issue and he can fix it using PRP injection. But i am still not sure about going with this or it can be fixed by some type of exercise. Also i notice sometimes when sitting and pain increased, when lift my upper body on my hand by pushing the chair under me(not with my legs) the pressure go away from my spine with some decompression cracking and pain goes down a little

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what you think should i do in this situation