It's all inter-related. Hormone fluctuation affects your nerves - this is pretty common knowledge, no? Whether is is monthly or pre-, during, or post-pregnancy many women find times when they are jumpy or emotional for no apparent reason other than hormones. Stress made me black out mentally when I was pregnant - haha my physics teacher said that most the guys who did worst than me on exams wished they had my excuse - little did he know. Or me for that matter. Anything that affects, irritates, or over-stimulates the nervous system would cause problems with bcfs it seems......That's why some of us find at least a small amount of ease in changing our diet, lifestyles, etc.- I believe we are just finding ways to calm our nervous system and this helps us calm and deal with our symptoms.