Hi... apples have been known to cause bloating and digestive issues for some people. The culprits are fructose (which is a FODMAP) and the high fiber content. Fructose and fiber can both be fermented in the large intestine, and may cause gas and bloating. You might find this article informative. https://sg.theasianparent.com/which-foods-should-i-avoid-during-pregnancy
yhamissa