If you were my patient, I would repeat the pregnancy test, and if negative, I would give you a 5 day course of progesterone to start your
period. Then I would discuss something to help you ovulate such as
Femara or Clomid. You very likely will conceive with or without medications, but Femara/Clomid will regulate your cycles a bit and shorten them a bit, therefore speeding up the process. With these two medications there is minimal risk of multiples.
Hope this helps!