Weird pregnancy lines...

Has anyone else had lines like this from First Response? I’m about 5 weeks and 6 days but I’ve been having brown spotting when I wipe and sometimes it’s a light pink and then back to brown. Never on my panty liner, only when I wipe. I have some cramping as well so I thought I was slowly miscarrying and kept testing to see if my line was getting lighter but instead it’s still dark thankfully but I’ve never seen a wiggly line like that before. Has this happen to anyone else?