I feel like I’m having orgasm when I poop…

Hello so I am 19f, I don’t know that much about sex and everything that comes with it. What I know is that I already touched myself and felt something, don’t really know what it was but it was good I guess . Since recently EVERYTIME I poop, I feel like I’m gonna pass out because it feels really really good. My legs tremble, my toe curls and I just can’t do anything, it’s like I’m possessed. I don’t know what’s’ happening, all I know is that it feels really good, but I feel disgusting. How can I like pooping… help, what’s happening to me, is it dangerous..😔