14DPO, BFN & needing encouragement

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I’m 14DPO and I keep getting BFN or tests so faint not everyone can see them. I feel like crap, completely exhausted to the point where I just feel like I can’t make it through the day, I’ve been having weird cramps for the past several days (kinda like pinches or pulling), I’m constantly hungry but I can’t eat a lot even when I’m starving, I was really dizzy yesterday and I’ve had nausea on and off (I threw up Saturday after coffee)... I just don’t feel right. Is it possible to still get a BFP even though I’m 14DPO? It doesn’t feel like PMS symptoms. I just feel off and all of these BFN are making me so frustrated and depressed. Any similar stories that ended well? I need some encouragement.