Negative test but 3 days late

So I miscarried at the end of August. We just started trying this past month and now my period is 3 days late (it’s always on time) .

I have taken 3 pregnancy tests (first response 6 days sooner) and they have all been negative. I even tested first thing in the morning.

Has anyone else experienced this and had a positive and healthy pregnancy. If so when did you get your positive home test. If any feedback would be great 💗