Late PERIOD!!

LOVEME1019

Okay so I am 19 days late on my period. I have cramps, headaches , back pains , tender sore nipples, i eat a lot use the bathroom constantly , I am always sleepy .. i took a test when I was 6 days late and got a BFN than I went to urgent care I took a urine sample and that was negative I got checked I didn’t have anything everything came back negative. My periods are regular could I be pregnant?? Should I retest?