Early pregnancy symptoms?

Danielle
I don't know if I'm crazy, paranoid or what. 
The first "try" was just on 7 days ago. 
I've had weird cramping in my stomach (not the same as period cramps) and a weird, fluttery sensation. I'm so, so, so tired. More tired then I have been in a long time and I woke up 5 days after the first try with massive pains in the back of both legs from cramping while I had been asleep. 
I've done a test, it came up negative which I expected cause it was super early. 
Thoughts? x