Nursing does a number on our hormones and bodies. The nausea sometimes may be trying to tell us something -is it related to anything else? Food? Drink? certain time of day? after having a baby our bodies need to adjust so many things and the littlest tweaks can help -or hurt. I would check everything you are eating and drinking -if it’s easier you can do a quick one on one with me to walk through it. I have had friends who were thrown off by certain protein bars, and even plain water!