<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a spongey possibly liquid feeling lump under my belly button. Minor pain when pushed on it feels really like it s twitching or pulsating. Minor pain and I ve had it for years. I feel like it may get worse when I am stressed and has a foul odor and a little bit of stuff leaking out of it  <response>: Hi, this is possibly a sebaceous cyst or some sinus tract! Nothing to worry about this and try not to get infected there! I suggest you to go for an FNAC test sonogram of the lump for confirmation and to relieve your concerns! Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health. 