pregnancy is a bad time to change anything about iodine. you dont want to suddenly start large doses when you find out youre pregnant because of initial detoxing. you dont want to suddenly stop when you get pregnant because the pace and cadence of the pregnancy has been determined in an iodinated environment.
the 90mcg extra in the prenatal is not going to make any big difference unless thats all you were getting, then that would be a huge gain.
bottom line, even out the dose to 25mg of iodoral every day. thats below the detox level and still supplying ample Iodine for two. definitely dont stop taking it.
my daughter took about 6 drops of SSKI 2% every day she was pregnant. that equals about 150mg of Lugols a day.
mr nascent is right. the child is going to be quite intelligent.