Well i live near the ocean on the east coast of the USA and go swimming every summer so if i already had them, it must not have been for that long. But i see worms and shedded skin in my poop every day, some days its just straight black diarrhea with lots more worms than usual. So there are still a lot in there but i haven't seen a big round worm come out yet, i think it might be threadworms (strongyloides) or maybe blood flukes because they are full of blood sometimes. Those 2 types have a hard time getting rid of even with medicine. I took Albenza twice a day for a week and they still keep coming back. 2 weeks after the medicine i had a headache and fever for a couple days and it seems like they only got worse.