Help! Stress fracture- when to see a dr???!?

I have recently started dancing/tumbling in a show about 3 times a day 6 days a week. I wasnt really dancing anymore up until I got this job. My foot started hurting about two weeks ago only while dancing but now hurts all the time. Its a pain I can handle but it definitely doesn't feel good. It is tender to touch on the top of my foot and swells some after dancing but not that much. No bruising has occurred. It also hurts in the morning when i first wake up and walking on it causes a dull ache. I am hesitating to see a doctor, especially since I read a stress fracture won't show up on an xray until it begins to heal. I was hoping to get some advice on whether I should go to the doctor or just keep dancing on it? I only have one day off a week so it isn't getting much rest.