HELP! Spit up and stool

Britt • 👦🏼💙 May 27, 2016 ;👼🏼 12weeks Nov 2017 ; 🌈 💙🧒🏼March 8, 2020 💖👶🏻 Aug 3, 2021
My 12week old spit up and it was brown. A couple minutes later he spit up some more and it had like a red Mucousy clot in it. I called the doctor and he didn't seem concerned I EBF and he said its most likely from me. Has anyone else had anything happen like this before!?
This was last night and he has spit up normal since. I've tried to only pump because I am cracked and it looks like I have a scab. I did BF him to bed last night and at 7am. About a half hour ago He had a really dark stool. The doctor didn't seem too worried but has this happened to anyone? He's otherwise acting normal and his stools earlier were normal