Vvvfl - since miscarriage

I had a miscarriage on 15th sep. My bloods were taken on 2nd and 4th oct, they were 55 then 30. I had to do a Pg test on the 7th Oct and it was negative.

However, whilst this was going on I was doing opk test and I ovulated on 30th sep. The doc said we were ok to try and so we did. And I have this test today.....could it be old? Or is it new 🤞🤞