Waiting on a call from the hospital because I had protein in my urine and high blood pressure so…

Waiting on a call from the hospital because I had protein in my urine and high blood pressure so they want to do a non stress test but they were closed after my appointment last night. They said they would call this morning and let me know when to come in but I'm getting impatient ... When should they call? It's almost ten already . Only two hours of morning left