Bleeding with low HCG?

Kira • TTC 1st for 15mons and I finally had my BFP!

Hi! So my sister in-law is currently at the urgent care because started bleeding bright red blood and passed a larger clot. She got multiple positive tests just the other week so we are pretty concerned.

At the dr she got a positive pregnancy urine test, but they didn’t see a baby during the ultrasound. The dr said it could still be too early. Which makes sense, she could be anywhere from 4-6 weeks maybe. They also ran bloodwork and her HcG was 72, which is still in the normal range for 4 weeks. But low.

Has anyone experienced this scary experience and still went on to have healthy pregnancies? We are still here in the urgent care and would love to hear from anyone with similar experiences.

Thank you!