I can relate my period is total hell for the first three days especially since I have severe IBS. I've found some things that help.
Really strong mint, fennel, raspberry,chamomile tea. Getting a enough calcium and omega 3's ( flaxseed, walnuts, )can calm cramps. Eating fennel seeds and candied ginger, taking hot baths, hot water bottle on stomache or using a heat rub like tiger balm ( it stinks but it helps), exercising at least 30 min. 5 days a week like yoga or walking or something else you enjoy. Eating low fat foods everyday since high fat foods make cramps worse and avoiding msg, carbonated drinks, fake sugars.
I recently found out about yam extract from a Remedy show. It's a plant that comes from Mexico. It contains diosgenin which s a plant compound similar to those found in the body that can naturally support women gently and effectively during their period. It comes in a lotion form at health food stores. Really pricey but I'll try anything.You just rub 1/4t.-1/2t. on soft parts of the body eg. upper arms, stomache, thighs, etc once or twice a day. It can take up to 3 months before it works. I just started using it for a little over three weeks now so I have yet to notice an improvement.
Supplements can help like vitamin e, magnesium, potassium, vitamin c , vitamin b6, thiamine,folic acid . I've tried taking supplements but they just make my IBS worse.
Hope this helps.