You won't see worm parts from outside the digestive tract
Of course you can, they will be eliminated via the lymphatic pipes and then via the tonsils (almost nobody considers these ways of elimination...)
But they may be so much broken down that you won't recognize them. But the texture of the mucus eliminated is different than normal common cold mucus (especially if your diet is clean)
But in any case you can feel dying parasitic worms and probably observe them objectively by using ultrasonography or something similar...
Why has this never been done while using zappers/frequencygenerators ? Probably to not show how ineffective these devices are to kill big (not microscopic) parasitic worms.