Spotting at 4wk 6days

Hi ladies,

I got my first ever positive pregnancy test on Friday and retested 4 more times with different samples throughout the next 48 hours to be sure. This morning I woke up to some tiny clots when I peed and reddish brown when I wiped. I’ve only seen it when I pee but it’s still there but lighter. Theres only a very small amount of reddish/brown on the liner I’m wearing. Any thoughts on if this is normal or possibly a chemical pregnancy?