I had unprotected sex a little over a week ago and I'm afraid I'm pregnant, even though I've been on birth control for a year now... the last couple days i've felt nauseous at times, and so dizzy I had to lie down (mostly occuring in the morning). Now i'm waking up in the middle of the night feeling dizzy. I'm 19 years old and i feel like I shouldn't be dealing with these symptoms if something wasn't wrong?? I'm supose to get my period in a couple days but i've never dealt with this before. any help would be great!!