I am currently two weeks late. i have taken multiple tests and they have all come back negative. should i request a blood test to be done?

Not necessary: A pregnancy test will be positive as soon as the first day of your missed period. For accurate testing, the first morning urine should be used. You can repeat the test 1 week later with a different brand if you want to double check. Most likely your irregular period is due to stress, weight loss/gain, medications, increased exercise, anxiety, or travel. See a Dr if your periods remain irregular.

Depends: If you had sex since your last period and have any doubt, get a blood test for HCG level.