Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_37758 ( "Player" text, "Touchdowns" real, "Extra points" real, "Field goals" real, "Points" real )

### Question ###
How many field goals did Carter get when he had 0 extra points?

### Accurate SQL ###

SELECT SUM("Field goals") FROM table_37758 WHERE "Player" = 'carter' AND "Extra points" < '0'