Should I see a doctor if I faint?!

Should I see a doctor if I faint?

This morning I had a dizzy/fainting spell, blacked out for a moment and fell on the floor (somebody caught me, don't worry). I hadn't eaten in the past 4 hours so I hope it was just because of low blood sugar. This kind of thing has happened before, about once or twice a year I guess. I've also had a dull headache all afternoon and just as I started typing this question I got sharp pains in my right temple. Should I see a doctor/is there any way to stop this from happening?

You should see a doctor as soon as possible, as a nurse I can tell you that many things can cause fainting but you should absolutely have it checked out.