Ive had lower abdominal cramping for several days, been constipated and nauseated. not pregnant and my period isnt due for another week. i eat healthy nd exercise daily. what could be the cause?

Can call Dr on video: Each person with constipation needs to be sure there is no other disease causing it. If constipation is just due to slow movement of the food and poop through the gut, then the things people usually try are vegetables, water, prune juice, prunes, fiber-with-water, polyethylene glycol, Senokot or other senna, milk of magnesia, other laxatives... One's primary care doctor can evaluate, if needed.