My DD seems to spit up alot, sometimes right after eating. I nurse on demand which can sometimes be every hour and a half to every three hours. I have a heavy let down and sometimes she coughs from it. Can the spitting up and seemingly tummy upset be from over eating? Tonight she spit up a minute after eating and was acting like she was still hungry. Her belly was also full feeling. She is not constipated. She does get the hiccups alot as well. Thanks for any help.