Butt spasm while trying to BM?¿😳

HALEY • @bedtime my kids turn in to dehydrated philosophers who need a hug. 😍😘
This is so odd, but lately I sit down to execute a BM and my anus freaks out, reminds me of the awful leg cramps because there is nothing I can do just breathe until it stops. 
It's happening a lot more lately. 
It kinda happens randomly as well. But especially if I try to BM
Does this happen to anyone?🤗🙃