4-5 days usually to make it through carb (or any food allergen) withdrawals. Less for some lucky people, a bit more for some unlucky ones.

Remember what Eleanor Roosevelt said, "No one can make you feel inferior
without your consent."

link to www.paleodiet.com and start reading the various links off that page. (It'll take a good long while to get through them!) As you do, not only will you get a pleasant education in archeology and the anthropology of food, you may feel less alone and surrounded, at least in cyberspace, by supportive folks of significant intelligence and knowledge.

Paleodieting is the way most humans who ever existed have eaten--it's this grain-laden way that's really the "weird" way.