Short luteal phase

What does everyone know about this? Mine has been 9-10 days since my miscarriage in August, and my cycles are short, 22-24 days. I am waiting for my first appointment with the fertility doctor March 14, but want to know if there is anything I can do now. I read something about a B vitamin. Is anyone else going though this? I get really sad thinking my egg may have been fertilized, only to be shed with my early periods. Thanks for any help or feedback.