Advice on cycle after miscarriage

Looking for advice on your cycle after a miscarriage. I started bleeding 3/17 and found out I was miscarrying. The baby had passed away at 7 weeks about 2 weeks earlier and I was starting the expelling process naturally. I was done bleeding within one week. Everything was clear on a follow up ultrasound and the doctor said we could try as soon as we were ready. We did pretty regularly.

If I followed my regular cycle length, my period would be due this week. I tested with a FRER and the tests throughout the week all showed a positive faint 2 lines. The digital was negative. They haven’t really gotten darker, just all the same.

Is it possible these are still residual hormones from my miscarriage last month? Or a new pregnancy? The doctors never followed up on my hcg, but had said they were decreasing when they tested last month. I plan to give it a few days, and test again. If it’s positive, I’ll go in for an appointment to get everything checked. I felt like 5/6 weeks was a long time to have hormones left. If anyone has any similar experiences, please let me know!