I am 28 years old. i had a ruptured ovarian cyst. i eat a lot, urinate a lot, and feel sick. my weight has dropped from 54.9 kgs to 52.5 kgs in three weeks. is sudden weight loss after laparoscopy normal?

You will be fine: You are loosing weight as you are not eating enough due to your temporary illness , once your abdominal condition ( due to rpt. Cyst ) and urinary infection clears you will eat better and gain weight, speak to your doctor.

NOT NORMAL: Especially that nothing major was found. I would however rule out diabetes in the first place before checking other things. You lost weight, eat a lot a pee a lot. Have your blood sugar examined first. Same time one could look for thyroid function as well. If all these come out normal and the weight loss continues you need a good diagnostician...