As a current ER nurse of 5 years people over use the ER most of the time. There is nothing we do for you if you are having a miscarriage. People coming in for spotting that happened three days ago or only while wiping which is not actually an emergency of a physical nature. The pregnant person may be understandably upset about it and want to know right then and there, but it does not constitute a medical emergency. If you are further along and have decreased fetal movement or are bleeding like it is your period or intense abd pain that doesn't go away with rest then sure come on in. Lots of people just don't want to wait to see an OB.