Hello Elitza welcome,5yrs ago i injured my back also l4-5 same symptoms as you.But it took 8 months for me to get authorization from workers comp to see a neurosurgeon,by that time i was so bad i would fall.Finally had the surgery did not help me,by that time i was having same pain on left lumbar long story short the surgeon put me on full disabilty.In your case i would not wait any longer and go for the surgery, that can be your only option for pain relief.I now have radiculopathy on both legs,foot drop left leg,problems r/ankle need a cane for assistance.My cervical fusion also failed.Stopped all pain meds wich were just masking the underlying problem,and causing health issues i did not need.Please ask the surgeon what type of product will be used in the fusion,if he says BMP-2 ask how will he perform the surgery posterior or anterior.I was so desperate i did not do research on the BMP-2 wich 2yrs later found out he did my surgery in an off-labell manner,meaning the way he aproached the surgery through the posterior/lateral side are not FDA aproved methods wich is illegal and dangerous.The FDA only aproved BMP-2 for an anterior aproach.So please do your homework an ask questions i do not wish anyone go through what i am now going through.GOOD LUCK