I'm so sorry for your worries. Try not to get ahead of yourself. I'm sure it's hard not to panic after everything that Marley went through. Its really hard to tell what's going on. Hopefully it's an injury or ulcer or something totally unrelated to what he has been through. Could it be scar tissue? Sorry I'm no help. But I will send all good thoughts and prayers to you and Marley that this is nothing!