Umbilical hernia PAIN???

Marley • Happily married, kids r grown, Tarantula collector, Lover of Animals
I'm having surgery Tuesday to have this thing fixed. I've known about the hernia for a couple months, but only the last few days my stomach is hurting so bad. Like gas stuck inside. Yesterday, I called the surgeon and she said I will be fine until Tuesday because I've been able to poop. I'm in a lot of pain, but no fever. Anyone else been through this? I've googled it many times and don't know if my intestines are pinched, but it HURTS. Anyone else been through this?