I testd neg in the pt but i took it on the 1st day delayd. reg 1st day is always 20th month and had unprotectd sex jan.4-5. am i pregnant?

Too early: We cannot say you are pregnant until you have a + pregnancy test. The accuracy of pregnancy tests varies depending on the brand, etc. You could be pregnant, but it would have to be a very early pregnancy, suboptimal pregnancy test, user error, or even an abnormal pregnancy (with slow HCG rise). Take the test again in a few days. If still in doubt, see a md who can easily test you. Its a quick test.