PERIOD 31 DAYS LATE STILL NEGATIVE TEST

UGGHH😞 SO MY LAST PERIOD WAS DECEMBER 5 AND HAVE NOT HAD ONE SINCE. DID MULTIPLE TESTS N NO LUCK. WHEN TO THE DOCTOR DID URINE TEST THERE STILL NEGATIVE. THEN MY DOCTOR ORDER ME TO DO A ULTRASOUND WHICH I DID THURDAY WAITING FOR RESULTS. IF I WERE PREGNANT WOULDN'T THE ULTRASOUNDTECH SAY I WAS?