Some fibers from the ventral cochlear nucleus cross the midline in the trapezoid body. Thus, cells in the superior olive receive inputs from both ears and are the first place in the central auditory system where binaural processing (stereo hearing) is possible. The output of the superior olive travels in the lateral lemniscus.
Delay caused by a short stress time is usually a week or two, then you ovulate normally. However, under continued stress (heavy exercise, malnutrition, etc.) you can be anovulatory for a very long time. If you are having problems in this area, have a look at this book: Fertility, Cycles & Nutrition 4th Edition.
The menstrual cycle is typically 21 to 28 days; however, the amount of days in the menstrual cycle can change due to medical conditions, stress, illness, medication and lifestyle changes with exercising and dieting. Exercising excessively or participating in strenuous sports can delay your period.