1 The time of day also affects pricing. 2  Security guards working at a late-night party in the city may cost $30-$50 per hour, for example. 3  An off-duty police officer typically costs $40-$60 per hour for security guard services. An unarmed guard from 21st Sentry Security in Dallas-Fort Worth typically costs $14 per hour, while an armed guard starts at $18 per hour. 2  The time of day also affects pricing. 3  Security guards working at a late-night party in the city may cost $30-$50 per hour, for example.
Possible causes of bleeding in the first trimester unrelated to miscarriage: Cervicitis is a condition in which the delicate cells at the mouth of the womb (or the cervix) bleed due to the mechanical action of intercourse, the alteration of acidity in the vagina (pH), or the effects of infections on these cells.
Most miscarriages are considered random events not likely to recur. Most of the time, a specific cause for miscarriage cannot be identified, though up to 70 percent of first-trimester miscarriages, and 20 percent of second-trimester miscarriages, are caused by chromosomal anomalies. Other possible causes could include infection or exposure to environmental or industrial toxins.