The top link, top picture has some characteristics of a nematode which are easy to spot since they are tapered at both ends, can't say anything about the other pics.
This is not Tapeworm -tapeworm has a distinctive ridges which nematodes do not and are much larger. It is difficult to diagnose adult worms for specifics as many species look similar in the adult stage, size is probably the best indicator. The ova stage is much better to diagnose concerning specifics. Roundworms are quite common aka as ascaris.
Many people describe flukes as 'rolled up tomato skins'.
Always best to send samples in to qualified labs which are difficult to find. See my post entitled 'lessons from parasites' I have some good information there.