I asked a dumb question earlier, and now this is part 2.?

I took a dollar store pregnancy test, I ignorantly did not read the instructions and didn't drip enough on it, well I went back and dripped more after it dried, and the already faint line turned into a full out BFP. I bought a 3 pack of first response early test and took one maybe 2 hours ago, and that was a BFN, WHYYY haha. Another dumb thing to add to this, is I'm about 8dpo. I'm extremely antsy, and just want to hear people's opinions, to maybe ease my curiosity so i can possibly go to sleep lol I'm a self proclaimed pee on a stick holic, so saying that I already took 3 other dollar store tests that were either BFN's or so faint it's not even considerable. Opinions on what you think is very much appreciated.