I'm so sorry you have to deal with the uncertainty. Realistically, waiting the two weeks is unlikely to change the overall outcome one way or the other. The exception that comes to my mind would be the small possibility you are having an ectopic rather than a chemical. If you start having persistent abdominal pain, call back and insist on being seen or go to an urgent care clinic.
I just had a chemical this month and, as much as it sucked, at least it was very clear what happened. Light tests, lighter tests, definitive period, negative tests... Not knowing is always the worst.