TTC-miscarriage

So first attempt at trying this month since my miscarriage, we didnā€™t DDT as mush as we should but on the right days.

Iā€™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 Iā€™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?