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Your symptoms of foul smelling and fatty discharge could be due to infection, you need to get examined by your gynaecologist , you need to have swab test of discharge .
You have not mentioned for which problem you got ablation done. You need regular fallow ups for that.
You need to get USG abdomen and pelvis .
Please mention your age to discus about need of Hysterectomy
. In younger age is not preferred. Depending on disease and your age doctor will advice hysterectomy
Get well soon