What dpo are you? I see a line in your last test.
With this pregnancy on ICs at 8dpo I saw the faintest of faintest of lines but could see it. Then evening 8dpo and 9dpo morning and SMU, BFN. Then at midnight 9dpo tested again and I had a very faint but there line. My tests fluctuated until 10dpo when I started to get faint but consistent lines which darkened as time went on. I think early on the hcg concentration in our urine us so borderline sometimes it picks it up and other times not depending on a variety of factors of what we have eaten/drunk/peed.
So don’t lose Hope! Really hope you get your BFP and sticky baby!