TWW-after miscarriage

So first attempt at trying this month since my miscarriage, we didn’t DDT as mush as we should but on the right days.

I’m now 7dpo and have been testing and getting negatives, is it still too early or am I definitely not pregnant this time?

Not 100% when I’m due AF as my OH and I decided to try before waiting for a cycle.

One app tells me 30th, another 31st and then another 2nd?