It is not "Whoops". It is "Whoopie". You had a "moment of clarity", meaning that you need to take some action.
First things first! Put your right hand around your left shoulder, and your left hand around your right shoulder. That is a big {{{{{hug}}}}} from me. The reason why I started posting again is because I needed the accountability. You took a very big step and admitting that you cannot do this on your own. That is why we are here: To support you! You need to forgive your self. Yes, it is hard to forgive yourself. But you know what, you want to get healthier right? You need to get right back up on the horse. We all have fallen off. If you never get back on, we go for the rest of our lives admitting defeat. Do not do that, please. Get right back up on the horse and show it who is boss.
Put down the fork and go for a brisk walk around the block.
Then come back inside and write down everything that you ate...you have to do that to get out of the denial.
Then go to your pantry and your refrigerator and your freezer and throw out the cr@p!
Go to the store and get some IBS-safe healthy things to eat.
Then you dust your self off and start over.
All of us have been there. We are here for you! Do not give up and do not give in!