First pregnancy - help ease my mind

I'm 5w2d. Up to now I've had some light (normal) cramping. No spotting, moderate discharge, etc. Had fatigue, breast tenderness, mild nausea, all the "typical" stuff.

Today when I went to have a bowel movement, I noticed that just as I started pushing, a little clump of mucus came out. Brown, but not dark, looked like the color of brown spotting, but just...in a mucus-y ball. No blood, no other odd symptoms or anything, but obviously now I'm paranoid because I don't know what that was.

I have a doctors appointment on Friday. Is this something you've experienced? Is it normal? I dont want to be "that girl" and overanalyze everything, but I'm just weirdly paranoid!