That picture looks to me as if it might well be a liver fluke/intestinal fluke. Problem is…when you’re pulling them out of your mouth (I do the same thing) its like finding fish washed up on the beach. They’re dead. They may not be in great shape. So, it’s hard to tell. (I’m always wondering…is that just food that’s coming up?) That’s why it’s SO important to get a real medical diagnosis (through, for instance, a test to see if you have antibodies against a specific parasite, which is how Covid test work. Another more involved, expensive test, is a “PCR” test, which can detect the DNA from different species of parasites.) But you can’t get these in a kit like a covid test. This condition is really confusing. I’m older. I have a grown daughter who’s a medical professional in Chicago. I’m a technical analyst now, but I used to be a molecular biologist who studied fungi. So, I know something of Biology. But that actually doesn’t do me much good, because I’m not an expert in the field. I could show you literally hundreds of pictures of the things that have come out of my mouth, nose, ears, and things I’ve passed in my stool. This condition came up for me after working in Germany, England, and Italy on and off for about three years. It’s all new to me as well. I take pictures of everything that I can. I also keep samples in alcohol to forward them to a laboratory. But there aren’t very many labs that I can find that specialize in this area. Your picture might actually be a couple of thise things grouped together. That's why I keep these little sample vials around and bottle of isoporopano (running alccoho), because if it's a clump of individual parasitses, the will usually separate in the alcoho.