Congratulations on your first steps of cosidering weight loss. Those of us who suffer being over weight carry a burden that thin people will never and can never understand.
I live on the Mexzican border and know many people who have had medical work done there. I have never heard of any horror stories, but then I have not talked to everyone of course who has had surgery there. Just do your research and don't jump into anything to fast.
I do have a cousin, who has had many many surgeries in his lifetime due to a bad accident 40 years ago.
Two years ago, he went to Thieland for surgery and said he wished he had know about this place many years earlier. He said it was the best medical facility, staff, Dr.s and treatments that he has ever experienced. Said that people were coming from all over the world. The rates were much cheaper than anywhere else.
Might consider doing some research for that country.
Good Luck in your research and decision. Please keep us posted.