I took a hpt 3 days before my period it came back with a clear line and a faint line so I assumed I was pregnant but went to da hospital they did another urine test the next day it was negative could I be pregnant?

It's possible that you could be but if da hospital told you no, den probably not.

If you had sex, you could be pregnant. Every test has different "lines." To get an accurate positive you have to wait at least until you are two weeks late to test using first morning urine.