I'm 28, regular periods. two kids already. i'm 16 days late, one faint positive multiple negatives, slight cramping, sore breasts. should i wait?

Can repeat in 1 week: 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.