Positive test after miscarriage

Samantha • After 2 years of heartache and 1 miscarriage we welcomed our baby girl on 8/31/20 💗🌈

So I’m posting this here in hopes to get more people to see it who have had experience.

2 weeks ago I was in the ER with bleeding at 5weeks. HCG was 947 and I was diagnosed threatened miscarriage with only a thickened endometrium on the ultrasound.

2 days later HCG was around 300. Diagnosed impending miscarriage.

Fast forward 5 days.. I start bleeding heavy bright red and clots. HCG 203 and told I am officially miscarrying but my ultrasound was clear and I can try again whenever. They said to count that day as cycle day 1.

Husband and I waited til I was just spotting to try sex that was cycle day 4. We haven’t had sex since and it’s now cycle day 9.

I’ve been taking urine tests every other day since cycle day 1 to see the line fade and go back when it’s negative for blood work to confirm I’m at 0 because why get poked more than once?

So it was getting light and 2 days ago it was just about gone with just a little hint of pink. Now today it’s back to what it was on cycle day 1! It’s still lighter than the control... but why is it darker?

Anyone else have this happen??