ovulation test detect pregnancy ???

Hello. So I had a miscarriage aug 28th at 6 weeks.. this is mine and hubbys first cycle officially trying I have bought preseed and ovulation tests for his month. So after my period ended on the 5th we had started testing. I got my positive opk on the 12. And I got another after that. Then they faded... today I took another opk (cd 22) and it was positive. Could that mean I could be pregnant???? I start af in 4 days.. could I still be ovulating??? I need help..