BFN at 15dpo

So AF was due yesterday, and she didn’t show. And I’ve been very regular for about 6 months now. And the past week I haven’t had any symptoms, even my cystic acne didn’t show (that NEVER happens). So I bought a test and took it this afternoon and it was negative (although i swear I saw the faintest line ever). The only thing going on is my boobs are kinda sore, and I have the strongest craving for chinese food (I only liked it when i was pregnant with my first). I have waves of nausea but nothing too bad. And I cramp sometimes. Do you think my period is just coming? Or should i wait and test again? I was planning on taking the test tomorrow morning. But I feel like I’m crazy. Help.