I doubt very much your dietary supplements could be affecting your health like that. I don't have much experience with estrogen, but I have a lot of experience with anxiety attacks. I think you might be experiencing an anxiety disorder due to the massive amounts of stress you're under. You also have to remember that panic attacks don't have to make ANY SENSE. They happen somewhat randomly. You might have stressed yourself out in the MORNING, and then in the AFTERNOON, you get a panic attack.