My LO has been throwing up(projectile) during and after some breast feeding sessions. I burp her a few times during the feeding and always keep her in an upright position afterwards. This doesn't happen when I feed her pumped breastmilk....does anyone have anyone have any experience with this? I usually feed her on one breast for about 15-20 minutes or until she wants to stop. Could my letdown be too strong or is she eating too much?