Please help TTC for 6months

So on the 10th of September I took an opk and got a very clear positive also had the CM to match.

On the 20th of September I took a pregnancy test and after 7 mins (test says max 10 mins) I got a very very very faint line see first photo.

On the 23rd of September again did another pregnancy test and got a little bit darker line but still very very faint after at least 7 mins. See photo two

Now my period is due today the 24th of September and it hasn't arrived so out of curiosity I did an opk and it shows an LH surge see last photo.

Photo one

Photo two

Photo three