<s>[INST] Hi I m a 14 year old male and I ve been having these random and weird abdomen flutter s and some slit pain just under the belly button. I have had surgery on my stomach (the surgery was where the belly button was and the surgery was 7 years ago) but I don t know if that s it your not, I ve seen to have lost a small bit of weight (but this is verified because I do not scale, but I fell thin). I know this is not the best information but if you can help it will be greatly Appreciated. [/INST] Hi and welcome to Chat Doctor. It is hard to say the diagnosis considering what you've said, but first thing is to make clear is this caused by abdominal organs or abdominal wall. It can be hernia or subcutaneous lesion in abdominal wall, in this case it can be easily surgically managed. But knowing that you had surgery already there can be intra-abdominal pathology usually caused by adhesions. Or this can be new disorder such as gastritis or gallbladder stone. To evaluate all this you should do at least ultrasound and the pal further tests and treatment. Wish you good health. </s>