PMDD: Premenstrual Dysphoric Disorder

Hi everyone. This past year has been rough... and I suffered terrible panic attacks for a while, which then got better with time. But now it's like just a lot of depression. I wish I could describe it all but it'd take too long. I can be fine for a week and then BAM, hit with a wave of tears and irritability. Sometimes it gets so bad that I have suicidal thoughts creep in (they terrify me).

What do you guys think? Could I possibly have this?