No appetite

I am 7 weeks pp and I have no appetite.y milk stopped at 3 weeks pp and I was so hungry and eating lots while breast feeding but now I have had no appetite for the last 4.5 weeks. Partially yes, it is because I am more busy and always thinking about my baby but even when I do have time to eat, everything makes me feel sick. When I force it down I gag. Any food. Anyone else have this issue ?