My period is a week late. have all the symptoms of early pregnancy like nausea current trips to the bathroom and super tired. could i be pregnant.all ?

Maybe. Maybe not.: Pregnancy is the most common cause of a missed period. If not pregnant, other causes of a late or missed period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (especially birth control pills), hormonal disorders, etc… A home urine pregnancy test is very accurate 3 weeks after sex or 1 week after missing a period.