4. Cut Down on Coffee
Caffeine, especially from coffee, is a well-known vasoconstrictor – it makes blood vessels constrict. Indeed, it may cause the vessels that feed the uterus to tighten more than they do in non-coffee drinkers. If you’re a diehard coffee drinker and can’t cut it out entirely, try avoiding it just in the week before your period and see if you notice a change.