That sucks that you have a hernia. My GI thought I had a hernia because of the bump and the pain, and that it was near my stoma, but it was an abscess. I am a pro at leaks! Funny though, I have two bags on. After that abscess was removed, following the removal of the two drains, it never closed, and now I have a fistula! So, two bags, two leaks, sucks. Anyway, I've had my ileostomy for two years and have had so many leaks for a lot of different reasons. First, make sure you're cutting the wafer hole just big enough. I cut mine too small because I didn't want the output to get on the skin. But that just made the stoma swell and lift the wafer slightly. So make sure it's big enough. Second, find the right adhesive paste. There are the rings, but I like the paste in a tube because it's quicker. What I also use is this Flextend from Hollister. It's like this sheet you cut for around the stoma for extra adhesive or for sensitive skin. I cut mine out to go over just the areas I know it leaks...to the left near my belly button, and above where a healed suture made a dent. You want the skin the same level!!! If you have scarring like I do, it may cause unevenness. To make it even, just use paste. I used to fill my belly button with paste to make it even with the skin. Third, don't eat a lot for dinner. If you eat something like a burrito or a big meal in the evening, you are likely going to have to wake up in the middle of the night to empty the bag, or more. Don't drink a lot of fluids right before bed either, like tea, water, or juice...it will all go through quickly. My savior, though, is the belt! I wear it throughout the day too, with clips on the end of the bag, and it basically pushes the stoma forward and the wafer back. Just think...moving around moves the wafer. The more activity, the more you wear it out. Also, try not to flush your bag with water. I did that at first because I thought the whole situation was just gross! It's the stomach acids in the output that make the adhesive swell. Water wears it down. Also, don't have the wafer on for more than four days. I wait till just 3 days. The longer you wear it, the more the stomach acids work their way under the wafer. The adhesive only works for so long. That's my advice; it works well for me :)