15 weeks in, when will the exhaustion end?

I'm almost 4 months post op TVH for uterine prolapse and rectocele repair. First time I've been on my feet for 3 straight hours today very slowly Xmas shopping and the exhaustion almost killed me. Thankfully could hang on to shopping carts most of the time, but this just seems endless. I was afraid I was prolapsing again as the exhaustion seems to emanate from the pressure down there. I'm quite slim and love to walk. How much longer to just feel normal again? Does the pressure ever go away? Will I ever get to Disneyland, ha! Can't even imagine the possibility.