I bought two sets of two first response tests and went through the first package with two negatives at 6dpo and 8dpo (I tested too early, and too late in the day I think?)

Then I got my first positive on 1/14 and took another on 1/16 to confirm before I called my mom. I am still in a weird state of shock and disbelief and have no symptoms to speak of besides being a little tired, so for my own sanity, I bought 3 more on Amazon today and I'm going to force myself just to test once per week until my u/s.