Pregnant women are advised not to drink coke in the early pregnancy. Coke is a high carbonated beverage, which contains many preservatives and food additives. Embryos in early pregnancy are in the vigorous stage of differentiation and development of various organs. Some carbonic acid in cola will stimulate the gastric mucosa, make the stomach feel full and affect the digestive function. In the early stage of pregnancy, the body will be affected by the increase of HCG and progesterone secretion, which will affect the digestive function of the stomach and is prone to nausea, vomiting, acid reflux and indigestion. If you drink drinks, carbonic acid stimulation will aggravate stomach discomfort, further affect the digestive function of the stomach, which is not conducive to pregnant women's intake of nutrition and affect maternal and child health. Pregnant women who drink carbonated drinks such as cola are prone to calcium deficiency, which is not conducive to fetal development.

I hope this helps.