I Have Pinworms At The Moment And I Know You’re

I have pinworms at the moment and I know you’re not supposed to but I used my finger to get them out of my butt because they were so irritating! I washed my hands afterwards. But when they were on my finger 3-5 of them were in cluster; wrapping around each other and piling on top of each other. I know how to get rid of them which is what I’m going to, of course. I was just wondering why they were doing that...