I noticed that my transmission has been getting a little harder to shift and jerky on the shifts the last couple days. This morning on the way to work I literally could not get it back into any gear when I stopped in trafic. It felt like the linkage was jamed. Now unless the car is not running I cannot get it into gear and once moving I have to shift like I am not using the clutch. Also when I am trying to force it into gear the car moves very slowly.

I've never had any problems with the clutch. It has never slipped.

I also checked out the linkage and it looks fine. When stopped with the engine off it shifts just fine.
I'm thinking it might be my throwout bearing. What do you think?