I am looking for some support and advise. I am 3 months post ALIF. Was doing REALLY well, I was down to needing pain meds 1-2 X per day and had resumed working my full time job that requires me to sit in front of a computer for 90% of my day. I was rear-ended while sitting still at a stop light the other driver was going approx 35-40 mph. I was not sitting back in my seat at the time of impact, slightly leaning forward. Since then I have had terrible pain into my cocyx, pressure and pain at my fusion site. The pain to my cocyx seems to be getting some relief from PT, however no change at the fusion site. I was told my SI joint was out of allingment. However able to be put back into allingment. I have had an x-ray and CT Scan both look OK. By that I mean the spacer and cage are where they were implanted. I am going on being out off work no week three. The only answer I get is likely acceleration/deceleration injury (whiplash)the pain is likely muscular. However the pain at the fusion site does not favor one side or the other, it remains central over the fusion. And pressure, feels like something could "pop" when sitting. I have done muscle relaxers, however the combination of increased pain meds and muscle relaxers was making me sick. And given only 3 months post op anti-inflammatoy medication are not an option. I am taking Percocet every 4 hours again. Scared and frustrated, anyone else encounter something like this?