i find that eating clean and exercising regularly actually help me. My cramps (and I would have ones that land me in the fetal position regularly) are no longer bad. I can easily live through my PMS now without any OTC crap. (oh yeah, a good adjustment or two prior to my cycle works wonders too)
I had something similar happen a few months ago. Thursday was my 'big workout' day. I would walk 5-6 miles, do some p90x ST, and without fail I would get a period Thursday night - every week. It would last 5-10 days like normal period. This happened for a few months and I finally went to the doctor. For me it was a coincidence. Thursday is still the day my period will start, but now it is just once a month. My gyno did check me for EVERYTHING (chlamydia, gonorrhea, AIDS, etc) and they were all negative. So there was no reason for mine, but you should definitely get checked.
Could be your system getting used to the workout if you haven't done so in a long time. I find working out does increase the flow but as everyone else has mentioned, activity eases the cramps. Do keep an eye on it though
I'm a pretty big person, and I went for a walk today with a friend. We walked about 1 1/2 miles and it took about 40 minutes. When we got back i started having the worst menstrual cramps and bleeding. Has anyone else ever had this happen?
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