Help! Is this a positive or not?

I am six days late with no sign of my period. My boobs are sore, and I am cramping a little. My boyfriend keeps telling me I am having terrible mood swings as well. I have taken 2 digital test and got a negative. I have taken 3 regular test and got two negs then one that looks like a faint positive, though it didn't show up very quickly. This test was taken last night and the two digital test were taken this morning. I am not sure what to make of it