I really truly think i am pregnant..

Okay guys...so I'm turning 20 at the end of the month and my boyfriend went inside of me on the 30th of last month...every since a week after that day I've been having tons of symptoms. Super achy breast, nausea but no puking and mild to severe cramps as well as feeling like my stomach is dropping from like a rolar coaster and only two days in a row I had a terrible migraine and when I would take medicine it would make it mild just not go away. I tested on the 11th and today and both test were negative. I have never been pregnant so i really don't know but I have a weird feeling where I truly think i am....am I just testing to early??? I dont know how to feel cause all this stuff is weird and very unusual...i just wanna know...im so nervous and impatient. Any advice or help?