I get the same thing, actually. I can get to that stage alot, if I wanted to.
I get the same sudden feeling of pressure, but I think that this basicly jolts me awake and the feeling passes. I havent tried in a long time though.
So I guess you should somehow detatch yourself from feeling, from beeing excited that you're almost in an LD, trying to walk the thin line between waking and dreaming, trying not to fall to either way.

But perhaps, what you felt is the transition, and you end up in a hyper realistic False awakening. Do some RC's!
I dont recall me every doing one.... hrm, interesting. Why didnt i think of that before? So many potential Ld's wasted.