Stinky brown poop???

Kristie
Hey ladies- DD just got her first few vaccines last Thursday and had a few normal breast milk BM's (yellowish-orange and seedy) but then yesterday started with TERRIBLE smelling gas and a super smelly gooey brown BM. She again has the gas today and had a small BM like the one yesterday but I'm not sure if this is normal after vaccines? She did have the oral rotavirus and I've read some online posts that seem similar to what we're going thru. I left a message for her Pediatrician so we'll see what they suggest too but also wanted to know your all's experiences too!