I am 14 days late. all urine tests have been negative and hcg level done 12 days late; (-) too. test this am showed faint line. could i be pregnant?

It is possible!: You might have conceived later in cycle, wait a week and test again, unless you have your normal period in the meantime!

Potentially pregnant: A urine pregnancy test turns positive the earliest one week after conception. As long as there is no menstrual period, ovulation can happen at any time. A weakly positive test would be consistent with pregnancy, if the woman had unprotected sexual intercourse a week or more before the test turned positive.