The right environment would be inside the uterus and the cervix. In certain environments, such as the cervix, uterus and fallopian tubes sperm have a life-span of up to five days. That's why a woman can get pregnant if they ovulate within 5 days after intercourse.
Problems with sleep, such as insomnia, are an acute risk for suicide, whether or not they are part of a depressive episode. It is important to note that sleep problems increased the suicide risk, even after controlling for other variables such as gender, mood, and alcohol problems.
One study has suggested that zolpidem (the active ingredient contained in Ambien) doses of 20 mg (twice the usual dose) may cause apneic episodes in patients with obstructive sleep apnea. Respiratory side effects have included respiratory depression which may occur at high doses.