I am beyond confused. Sorry. This is a long one.

Okay. So in April I had two periods a little less than a week from each other for 4 days a piece. 17-20 then 27-31. Then on May 23-25. I had what i assume was implantation bleeding. Nothing on pads and a very small amount of pinkish yellow stuff on the toilet paper. All 3 apps that I use say I am between 16-19 days late on AF. I've taken five first response tests. All five are below. One was taken on the 23 & one was taken on the 25.Two were taken the week of the 25. And the other was taken on June 1st. This morning I took an ept digital and it said not pregnant. I am beyond confused. My husband and I are TTC for 8 months now and although we both want this so bad. We are on the negative side of everything. Someone told me the digital tests are not as good for early detection. But if I were really pregnant wouldn't it say positive? Please help. And also any advice would be greatly appreciated on which tests to take and if the digital test do in fact require note hcg to be in the body.