So, I had unprotected sex on September 2nd. My period came on the 6th. But it was odd. Spotting for 2 days, one day of a somewhat regular flow, and then a day of more spotting. It was a very weird period for me. I am having dull achy cramping. And am so tired all the time. I took a pregnancy test this morning and it was negative. I don't know if I should believe the test or if I should wait and test again if I miss my period?? I am new to this whole idea of peegnancy. I am 21 and don't have any kids. Any input would be greatly appreciated. :)