At 18 do I still have baby fat?

Probably not. It all depends on how you define "baby fat." by 18 most people are firmly in /through puberty. That means the sex hormones have had their impact for several years changing the child body structure to the adult form. Sometimes areas of fat persist that are dismaying to adolescents, such as breast fat in males (gynecomastia) or belly fat in females. Being over weight is another problem altogether.