Pregnancy questions i need all the answers i can get please.?

guys i really need as much answers i can get please. I had one week ago today. i have stomach aches and pains...my back is killing me i have gas. im tired...i am discharging my are sore. i started my period on august 1st ended the 5th and had the 8th. so i can't be starting my period anytime soon. its just been a week i took two cheap htp tests that was a dollar each and both came back negative...maybe it's to early to test.please help me.