Advice please

I had a natural miscarriage 3 weeks ago and also got a positive OPK 1 week ago. Today I had a positive on a digital pregnancy test. I just wanted to see if my levels had come back down. I thought for sure to see “not pregnant”. I have an appointment but can’t get there until next week. Just looking for advice and peace of mind while I wait (not so patiently). Any chance this can be a new viable pregnancy so soon? 🤞