Please help me out!! Anyone know anything I'm terrified

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I finally got a faint BFP yesterday morning which was the day of my missed period and two days prior I had a bfn. I tested this morning and got a bfn. I think I see a line but if it's there it's really hard to tell. It's possible water could've been in the cup and maybe that diluted it? Idk. My cervix is still high and whatnot and I don't feel any different but the lack of a darker line or another faint is making me scared that my first time will be a chemical :( I have some test to test in a few days.. and I'm assuming if I start bleeding it is but nothing yet so I'm just going crazy.