I am 2 weeks post op TLIF and I am so stiff! I expected pain but man this stiffness is driving me crazy, especially when I first wake up. Also, I feel like I am walking around like a pregnant woman the way my back is arched when I walk. Has anyone felt this way? This little girl actually asked me when my baby was coming! Anytime I try to straighten or walk more upright I nearly fall over. Is this a normal experience. I am so embarrassed that I look huge!