I always get constipation and gas, which only end temporarily with treatments. It is because of my thyroid problem. I put my finger inside anus and I can touch so many small lumps inside together all over. Does it indicate some infection? I also have a skin tag. Is it that what caused me a another conical lump near anus. But none of them are hemorrhoids. I also get undigested food in stool. Am I suffering from ibs?