I'm so sad and confused.

My period was due on Saturday. On Tuesday I took a clear blue and got a positive response. I posted on here and 163 votes were cast with 96% thinking it was positive. Then I took a FRER and it was negative. Then last night I stated bleeding lightly, five days late. I am just so sad. I am waiting now on blood work to confirm but I know it is going to come back negative.  I am just so, so sad.