I'm probably doing the same now... but yes, I have been in your position and if I were you, I would wait and do another test. I wouldn't see a GP unless you believe there is a genuine problem.
At the moment, your symptoms could be either premenstrual or early pregnancy, but time will make it clearer.
In B&S, I don't think anything is particularly personal as it is part of a question and not just telling everyone for the sake of it. It's appropriate here.
Anyway, I wish you luck with whichever result you want xx