Pinworms or what help me?!?

So basically I’ve been getting this tingling sensation or tickling every time I pas gas. I’ve looked in my stool MANY times and seen nothing and I’ve checked myself and nothing I do have a bump in my anus but the tickling does feel like it’s a worm but I never see any and I never at all like literally ever having... show more So basically I’ve been getting this tingling sensation or tickling every time I pas gas. I’ve looked in my stool MANY times and seen nothing and I’ve checked myself and nothing I do have a bump in my anus but the tickling does feel like it’s a worm but I never see any and I never at all like literally ever having itching what can this be ?? The tickling or wiggling sensation is bothering me and it’s really uncomfortable :( and parasites disgust me Repost since I didn’t get confirmed it really does so feel like somethings wiggling there but I get no itching at all and see nothing And also i so sometimes feel it when I don’t pas any gas
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