Am i pregnant or just worried?

last month I was anticipating my preiod because some things were not right with my body. Then my period came on, and everything was fine. But then the wierd food cravings and itchy that i has ociated with my impending period did not go away. Then today, i was very hungry all day, but there is nothing that i even feel like eating expcept for pudding, and i went for a short car ride, and i got REALLY BAD motion sickness, but no throwing up. Am I jsut worried, or do you guys think I should get a test? I was not on Birth control last month, but I started this month, so i am 7 days in. Should I stop taking the birth control? Or should my husband and I not worry about anything?