4 Days until Period, BFN

It’s four days until my period (5 if you count today). Got a negative this morning. All I could think about. Even woke up to pee on a stick at 3am because I couldn’t wait. I have zero symptoms. I only feel PMS like cramps here and there once in a while. I shouldn’t get my hopes up right? Feels so sad. Feels like every month drags on and you just look at this calendar and all you do is wait for that moment to pee on a stick weather it’s opk or pregnancy test.

So basically just wondering what’s the percentage of negative tests and still possibility of pregnancy 4 days before pwriod.