[Trinity]

Personally, I find running helps. It's when I'm sitting or lying around doing nothing that the pains are worse.

You could take Ibuprofen, some runners take that anyway before races...not something I would recommend though. But if your period pains are that bad while you run then you could try it.

As for nutrition etc... drink loads of water and make sure you get plenty of iron rich food and vit C to help absorb it.