im on birthcontrol, have been for a year. but i have been experiencing alot of symptoms of pregnancy, this past week the most. i have to pee alottt, my stomach is very soar at times and i get cramps or shooting pains..and it sometimes hurts in my lower abdomin or all over. i have gotten really bad headaches every day this week sometimes getting to the point where i get so nauseous, i throw up. i have been taking my pills pretty regularly and if i miss one, i take 2 the next day. is there a possibility i am pregnant?