perhaps the progesterone level?
Anyway, if it is that, it might mean you are not ovulating. If hormone tablets would help they will prescribe them for you - do you have any more appointments? I can't believe they sent you away with so little information an no plan for what would happen now.
It might be that the only thing that could be offered is IVF treatment, but i really think they would have told you! When is your next appointment? you need to write down your questions and ask them next time you go, till you are answered to your satisfaction. Your GP may well be able to help if she has recieved a report from the hospital.
One other thing i have heard is that acupuncture can help regulate menstrual cycles and aid in conception, but i don't think there is any proof from medical trials, and i would be wary about spending money on stuff that has no grounding in fact (unless you are rich!)