Prenatal vitamins and constipation ๐Ÿ™„๐Ÿ˜ฉ

Jessica
So, I stopped taking my prenatal vitamins a week ago because they made me soooo constipated!! I think is the iron ๐Ÿค”. I'm 32 weeks now, is it bad if I don't take them anymore? Has anyone been through the same maybe? 
Thanks!! ๐Ÿ˜๐Ÿ˜˜