does it usually take to get a positive pregnancy test? I have a few symptoms, fatiuge, headache, moodswings. I took a test today and it was negative but if I am pregnant I'd only be about two weeks. I can't go by missed periods because I was on the depo shot and I haven't had a period in like four years. I was going to get on a different kind of bc so I didn't get my shot last month but have been using condoms. So I don't know.