Because transvaginal ultrasound actually allows you to see your ovaries, you can measure the size of your follicles, identify when the dominant follicle is selected, and see when the egg is released from the ovary into the Fallopian tube.
Low magnesium levels in the body put a drain on calcium supplies. Once calcium is exhausted, nerves cells stop functioning. Magnesium acts as a depressant calming the nerves and inducing sleep. Calcium has a role in making muscles contract while magnesium is needed to make the muscles relax. When magnesium levels are low, a person may experience symptoms, such as irritability, muscle twitching and nervous fatigue.
Some people also seem to develop a tolerance for valerian and it stops working for them after a while. If valerian doesn't work for you as a sleep aid, try taking 250-300 mg of magnesium along with 300-600 mg of calcium citrate with a full glass of water an hour before you go to bed. I've had good luck with this combination so far.