Am I miscarrying? TW

I got my BFP 2 days ago. Shortly after, I started bleeding light red, but I have continued to bleed dark red and brown (almost as heavy as a period). Very mild (barely noticeable) cramps.

I went to the OB yesterday and they took blood work for my beta HCG, which came back fine… but I’ll go back Monday to see if my HCG increases or not. They also did an ultrasound, but it was too early to see anything.

This is my test from two days ago:

This is my test from this morning:

I’m concerned it hasn’t darkened enough.

Anyone bleed like this at 4 weeks and have or not have a miscarriage? I’d really appreciate hearing all experiences.

Thank you!