My 3yr old son just had a BM. Afterward, he complained that is anus was hurty. His BM was orangybrown and filled with many (hundreds/thousands) of tiny black sesame seed like. He had another loose BM, a few minutes later, with more tiny black seeds. Again, he complained that his hinny was hurting. Two days ago, he ate 1/2 of a kiwi fruit. What are those seeds?