You should always go to the ER or call 911 if life or limb are at risk. However, here are some examples of situations that you can come to an Urgent Care for: if your primary care doctor’s office is closed, you have symptoms of a cold or flu, mild sprains and strains, cuts that may need stitches, abdominal pain, vomiting and diarrhea, dehydration, painful urination, etc.