Girls, hi. Who's on IV, has your little one ever had them vomit like a…

Girls, hi. Who's on IV, has your little one ever had them vomit like a fountain? During feeding, we had it four times and now, at night. It worries me. I told the pediatrician, she says it's air or an uncomfortable position. But when this happens, I'm scared for the baby. Maybe it's not the formula that suits him, I don't know what to think anymore. Doctors say nothing useful for solving this problem, I'm worried. This happens not every day, but still five times he vomited like that.