Reasons why hair dye doesn't last?

Desiree • Trying for my rainbow baby... i lost in june.mommie of a 3yr old & of an angel ♡♡
I was wondering if pregnancy can be the reason why my hair dye isnt lasting. Could I be preggo? I had the flu last wk now I have a UTI? Fatigue,dizzy,pressure in abdomine,lower bck pain. When I went to the E.R. they did a pg test( urine) it was negative can it be too early. Im currently ttc after having 1 miscarriage in june with second child. They did a D&c and I know that cleans you out completely. My last period was jan 2nd lasted only 4 days?? Is it possible