Excited Even Though I Got A BFN yesterday

Even though I got a BFN yesterday I feel there is still hope , normally the day before my period start I start spotting brown type stuff but this time I'm not ☺️ I know & just feel my period isn't coming tommorow , I woke up very nauseous , been having bad headaches n have had bad gas I think this is my mouth I'm so excited 😊