Late period question

Hey ladies, so I am officially a week late for my period. I have a history with ovarian cysts, but haven't had one effect the date of my period in a long time. The day i was supposed to start I had a lot of pain in the area of my ovaries, not cramping, but a pretty sharp pain that was made worse by pressure and I have had a lot of nausea, a symptom I normally never get. I am not sexually active, and haven't felt stressed lately, though I have recently had trouble sleeping, and I was sick with a cold the week before I was supposed to start. also I'm 19, just wanted to hear what you ladies think I should do. Just wait? Make an appointment? Freak out? Thanks.