I had an hydrothermal endometrial ablation last week and i was curious how long the discharge will last?

A few weeks: Hydrothermablation or HTA uses hot water to destroy the lining of the uterus The discharge can last for several weeks sometimes. If it is very heavy or smells bad it can be an infection, but that's not very common

Two weeks: I generally find that the discharge can last up to two to three weeks. It tends to be a clear yellow or blood tinged thin discharge. This is essentially the ablated endometrial lining sloughing off of the uterine wall.

Couple of weeks: You may have red to brown spotting for a couple of weeks, but it should lighten during these two weeks. Some women report a clear discharge for up to a month after the procedure.