Pregnant, but "Dr." says no. haha?

So for the past few weeks I've been experiencing pregnant type symptoms. I've been told that Im crazy for thinking they were and it was my mind playing tricks on me. But seriously, If I could tell myself my boobs were growing and they just did it, then nobody would need BOOB JOBS! Yes, its that bad. My breasts hurt (2 weeks) and I have period like cramps (past week) accompanied by nausea and over tiredness (slept from 5pm to 7am the other day). I went to the ER because I got some bad cramps and wanted a qualitive HGC test to make sure everything was alright and the "DOC" said he didnt think I was pregnant and gave me a urine preg test 6 days before my period is due and refused to take my blood. Luckilly my OB gave me a script to have blood drawn and I find out tomorrow. Anybody else been through this?