I took a pregnancy test at 8 weeks and it came out negative i take my birth control consistently for a year now and ive been getting my periods with normal flow but this february its really late and i havent had sex since nov could i be pregnant ?

Tests are accurate: 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. If worried and no period comes this week, can do one repeat urine test after this week.