I am 2 weeks late with my period. All the pregnancy tests shows negative. Can I be pregnant? I drink oralcon everyday. My breasts hurt and it's tender. How long should I wait before I test again and should I do a blood test?

Tests are accurate. Today's 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 (or 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.