Another reason for projectile vomiting (after pyloric stenosis is ruled out) is over-active let down/ over supply. My second baby would vomit after almost every feed...it would shoot across my lap and onto the floor. I couldn't keep up with the laundry. Our carpets and furniture were a mess. Well, when my co- LLL leader figured out what was wrong, and I started nursing on one side, etc., the vomiting stopped in less than 3 days. Even with all that vomiting, he still gained very well. Mary Ann Whitesell, IBCLC Lake Arrowhead, California, USA one mile above the rest of Southern California, where the dogwoods are pink and orange now!