Negative tests

Whitney
Okay ladies.  I have taken two tests and both have been negative, but I have skipped an entire monthly cycle and period. Now I would be ecstatic to have a baby, but I'm afraid to get my hopes up and be crushed. I have never otherwise missed a period. I took a test on thanksgiving and the result was negative. I took another this morning, and it was also negative. However, according to this app, I could be only 5 weeks. Should a test be positive this early? Or should I wait and take another next week? 
Just waiting on my miracle.