Positive OPK and only just finished period?

lo

Can this be normal?

I did suffer what I thought was a chemical pregnancy last cycle (positive tests and then negatives and AF came 5 days late) so was all feel very odd but had definite AF type bleeding and cramps. Last pregnancy test I took to make sure all the HCG had gone was 5 days a go and it was completely negative.

It is the last day of my period today and for the sake of poas (and because I bulk bought IC ovulation strips to take one a day) I thought I’d do it and it’s positive?