TRYING TO QUIT

PLEASE HELP A MOMMA OUT.

My daughter will be 14 months this month. breastfeeding has been amazing but I AM SO DONE. But SHES not!!!! I get so nauseous from after I breastfeed, Ive lost wayyyyy too much weight, and it drains me and keeps her from going to sleep. All she wants is my boob. When someone else watched her she falls asleep no problem maybe a little crying. Yes she gets milk allllll day long. But at bedtime chucks the bottle or sippy

Any advice is welcomed!!