I jus got off depo five months ago and haven't had a period for about three months.two weeks ago i had unprotected sex and ever since then I have had all kinds of pregnancy symptoms.bloating, headaches, back aches,stomach and leg cramps, some spotting,nauseated, strong smells, very very tired, dizziness, just about all of em.I took a pregnancy test and it came out negative can it be to early or do you think I can be pregnant?I have never felt this way and some people say it can be your period coming along but its been going on three weeks and still no period or nothing.