On Monday evening I found a few threadworms in my sons poo. Got the treatment (Ovex liquid) Tuesday morning and gave him a dose. Wednesday and yesterday we had a few in his poos (they appeared dead). He's done a poo this afternoon and there was a LOT of worms in it (2 or 3 moving, but the rest seemed still). But on cleaning him up he's had quite a few come out of his bum and they're all still alive. I've done two checks since his poo an hour or so ago and he's had a few more come out since, all alive. Is this normal? I thought it would've started working by now and any coming out would all be dead 😑