thanks for your query
only little white specks in urine does not tell that you are pregnant.
white specks in urine indicates shaded epithelial cells
in urine that may be present normally but when in excess it may be a feature of chronic cystitis
u need to have a culture and sensitivity testing of your urine.
for the confirmation of your pregnancy
you need to have simple preg kit test of your urine and also serum beta-HCG
you should consult your gynecologist in this respect.