My frog hasnot pooped for two weeks. There is hard lump on his right belly. I gave him bath three days in a row. I saw brown thing coming out of him during bath and he was trying to poop. But it seems hard for him. I picked him out of water. He just stopped doing poop action. Does it mean he has problem to excrete the stool? Does bath help in this situation? Or I need to try mineral oil?