What is the watery discharge after ablation?

Sloughing lining: Generally after an ablation- esp. After the her option cold technique - where an ice ball forms- you can expect such a discharge as the lining of the uterus sheds. Perfectly normal.

Uterine lining: Endometrial ablation is typically done by using thermal or rf , (radio frequency), to destroy the endometrial lining. Imagine a burn on your skin. At first, the wound "weeps" fluid before healing. This is similar to the watery discharge during the 4-6 weeks after an ablation. This is a normal response after the procedure.