Aside from your symptoms, there are other things to keep in mind when deciding between the ER and Urgent Care. For medical advice before visiting the ER or an urgent care clinic, you can call your doctor or IEHP 24-Hour Nurse Advice Line at 1-888-244-IEHP (4347), TTY 711.
Note that ERs are open 24 hours a day and many urgent care clinics close in the late evening.