Sorry if this is a little tmi for you guys I am just curious.
Today at work I went to the bathroom and wiped and noticed thick mucousy bloody stuff ... a lot of it. So I called the maternity ward at my hospital and they asked me a ton of questions and then finally said they thought I was having "bloody show" and that it had something to do with my plug something ( I was a little frazzled and panicing so I wasn't hearing everything right i'm sure) that i'd be ok , and It wasn't necessary for me to get a rg shot (I'm rh- ) . They said to just take it easy and if my water breaks or things get worse

to call them and then come in.
Now I was just wondering what having bloody show means?
Is it an early sign of labour or is it just something the body does in the last few weeks? Maybe I'm dumb for not knowing these things but this is my first time around and im curious as to whats going on.