Functional hypothalamic amenorrhea (FHA) is a relatively frequent issue I encounter when working with female clients who tend to be chronic dieters and exercisers. FHA occurs when your period stops due to an issue involving your hypothalamus which controls your hormones. This occurs when there is a combo of metabolic, physical, and/or psychological stress present.
One strategy you might want to incorporate as you work to restore a normal menstruation cycle is to utilize L-Acetyl-Carnitine along with L-Carnitine. Doses of 250mg and 500mg respectively have been shown to be effective in improvements in both the endocrine and metabolic pathways. There were also noted increases in Luteinizing Hormone and decreases in cortisol levels.