Period Question

Probably been asked a billion and two times, but hey. I'm a 20 year old abroad in a foreign country and uncomfortable. My period's been about 3 days long for a couple months now, and it's starting to worry me. Although the 'net says this is normal, I'm just concerned. Once I head home I'm hopefully seeing a doctor about it, just to see whats up with my body.

Do you guys know more about this? Is it normal to have 2 days of heavy bleeding and then just spotting for the third, done by the fourth?

Thanks ladies.