Brown mucus?

Krista • Mama to a special snowflake, two frenchies & ttc#2 💗✨❄️👨‍👩‍👧🏩
Anyone experience anything like this? I'm 4dpo on cd22 & just had some brown mucus it wasn't even spotting but just a color to my normal egg-white consistency mucus. I've been having some cramps off and on the last few days. Any ideas? I'm hoping it's not AF showing up early 😓