Anyone experience bfns with fmu but bfps later in the day!?

This has happened twice.. I hate to say “ bfp” because they are faint pink still- Af is due in 2-3 days. Could my urine just be too diluted in the morning? I’m so confused. I’m very nauseous, bloated, and hot flashes. I definitely feel pregnant but the tests are misleading me😫