Hi
First of all, if you experience severe pain with your periods I do recommend a full exam by your gynecologist. Severe pain with periods are not normal and can indicate medical problems such as the beginning of endometriosis or a host of other problems, and these do need medical treatment. As to diagnosing PMDD, I suggest you read my essay on my web site located at
http://geocities.com/pmddandpms The diagnostic criteria is applicable to women of all nationalities and countries of origin, you could even approach your regular doctor with this information. This would be the best place to start.
All the best,
Anthea