7 days late. 2 negative test.

Brittney
I am 7 days late. I'm emotional, fatigued, bloated, and I could eat an elephant. No nausea, cramps, and no spotting/bleeding. I've had two children before and I've never gotten negative test for them. I've also always been nauseous with the previous pregnancies, but I know every pregnancy is different. Could I still be pregnant? How long should I wait to test again? The suspense is killing me!