General :: Galaxy S4 Comma Key Is Gone

so ive been using my Galaxy S4 standard keyboard when im texting, and i use the comma key (to the left of the space bar) quite regularly. the other day i held the key and some icons popped up for settings and other icons... well i clicked on the cog (which represents settings) and now i cant get the comma back on that key. so whenever i want to use a comma, i have to switch the keyboard to the page of punctuation and select comma which takes way more time than necessary. get the comma back on that convenient key?