You still need to move the periods to the outsides of the parenthesis.

For example... this sentence:

While pregnant eating an unhealthy diet or not consuming proper vitamins essential for the babies growth can cause fetal malnutrition. (Craig, Kermis, Digdon 2002)

Should look like this:

While pregnant, eating an unhealthy diet or not consuming proper vitamins essential for the babies growth can cause fetal malnutrition (Craig, Kermis, Digdon 2002).

(I added a comma after "While pregnant" and a period after the end parenthesis)