Need opinion

I just lost my son at 22w5d exactly six weeks ago, I'm showing signs that I could be pregnant again, I used a opk and it came out faintly positive, I know they pick up ovulation and pregnancy hormones. That's how I found out I was pregnant with our son, I accidentally used an opk instead of a hpt, I got a positive on both. So could I be pregnant again? I see a doctor in two weeks anyway for some blood work, but this is just racking my brain.