I am irregular. My period was last 6 weeks ago. I was having pregnancy symptoms and I took two HPT and they were neg. Can I still be pregnant?

Tests are accurate. Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If done sooner, a negative result may be due to testing too early such as less than 2 weeks after conception.