Yellowish discharge

Am around 13 dpo i was cramping last night and i tested 3 times and all had what seems a vvvvfl but still dont want to get my hopes up then later on that night i started mild cramping and today i have yellowish discharge the first time i wiped and saw it i thought it was maybe the start of my period like a little blood or something but i had it all day and i would of thought that by now if it was my period it would of progressed to maybe a light pink or reddish but no its still yellowish is this discharge a sign of early pregnancy. I tested today again and there is a faint line bearly there i asume they are evap line since i would of thought that by now if i was pregnant the line would be darker but now with this discharge i dont know what to think