Yes, yes and yes! I always feel like I have a beach ball on when I'm pregnant. It gets in the way of everything, and makes everything harder. I also definitely know what you mean about the porno boobs, it's amazing how huge they get.
I know it's no help, but take heart that it doesn't last forever. Pregnancy is a finite period of time and you will be done with it sooner than you can imagine. Try to enjoy the fun parts (baby kicks!) and suffer through the tough parts... it's all for a great reason.
"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly..."