while I was working out, i had a burning sensation in my lower stomach. I continued to another machine which was working my abs and back too. While I was bent over on the machine I felt a weird sensation on my left side between my bellybutton and pelvis bone. I grabbed my side and felt a bulge. I put pressure on the area and the bulge disappeared. I went to the dr and he said he thinks i have a Spigelian Hernia. I was referred to a surgeon and was scheduled for surgery to fix the hernia and take put a gallbladder that has been giving me trouble for a while. when i woke up from surgery the nurse said the dr could not find the hernia. My question is I know what I felt the day I was working out. what else could it be if it is not a hernia.