I see white square 0.5 inch segments in BM, and with my limited knowledge, that's of tapeworm. These have been coming out for about 45 days (after starting Zymex-2).
They do bite, specially in ribs, around lower bowel, and near kidney.
Over the last 4-5 months (much before starting Zymex-2), I look at BM with a stick to find which parasites are getting killed, while could see many ascaris (about 15!), no luck on tapeworms' head yet:(