Loose skin...????

Hi everyone, I started out as a so called "lightweight" NOT! Anyhow, I have lost 43 pounds in the 4 month mark. I thought when you loose this weight everything will shrink back up....! My arms still have hanging skin and my thighs don't look to great either. Will I for sure have to have surgery to remove this or after reaching my goal weight (50 more to go) will things look worse???? HELP!!! I don't want to have to have a skin lift. Thanks.....any knowledge? Nadine