Discord and first publishing rights

I apologize if this has been asked, I tried looking in search and couldn't find an answer. Right now I'm writing with the goal of being published. I'm leaning more towards traditionally publishing and I want it to be an option so for that reason I've been a little paranoid about first publishing rights.

My question is that would posting my work for critique on a discord channel give away my "first publishing rights"? I initially didn't think so but now I'm double guessing myself. Are there any traditionally published authors out here who posted their now published works to a discord channel for critique?

I'm thinking of providing a link to a Google doc of my work to my group for them to look at it if that makes any difference.