Strong letdown?

Courtney

My baby is almost 5 weeks old and I feel like we've finally got nursing down pretty well... well, I was staying to think that until recently my poor girl seems to be spitting up more during and after feedings. I've also noticed that during nighttime feeds, there is a lot more grunting and groaning after she eats. Does this indicate that my letdown has become too strong for her to keep up with? Anyone know how to help?