Need some hope!!

 
I have been taking the $.88 tests for about two weeks now, all bfn. I had one more left so I figured I'd give it a try. I am 7-10 late, confirmed by dr, but she won't see me for atleast another week. I have been using the bathroom 2-4 times an hour since 7am, so this is very diluted. Have any of you lucky ladies had such a faint positive and actually turn out pregant??