I could be mistaken, but I don't notice feeling differently (in terms of emotional reactivity) in relation to my cycle based on subconscious hormonal effects.
What I do notice, very consciously, is that the mere fact of what is physically happening to my body (at that time of the month), and my awareness of those processes, is enough to make me grouchy and unhappy.
As in, "just" the symptoms of cramp pain, the physical sensation of gunk oozing from my body, and having to worry about whether it's time to change my "feminine hygiene" are enough to really bother me & intrude on my equanimity.
For example, if you took some guy and said: blood will seep out of your crotch for several days, you'll have wrenching pain in your pelvis, and you're going to have to worry about staining your bedsheets & clothing from all this, too-
that might well make a guy pretty darned mad, sad, and stressed out, with no need to resort to explanations involving levels of circulating hormones in the brain/body.
Am not making light of influence of hormones, just opining that the basic actuality of what one feels-on a tactile level-can be pretty unpleasant, regardless of other factors.
My point is that having my period makes me feel noticeably icky, on a bodily level-and that then influences my mental/emotional state, it's a feedback loop.
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*"I don't know what it is, but I know what it isn't."*