I had a positive pregnancy test followed by 4 negatives now period is 5 days late. what should i do?

If worried, visit Dr: Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done urine test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. Can retest in one week, with a different brand of home test. If negative, maybe was transiently pregnant.