My O 2 level has been approximately 92 -93 & my heart rate is about 112 I have had a cold / flu for three and a half weeks now is this something I sho?

Mgt. I would recommend seeing your PCP or acute care center. The O2 saturation is borderline and you may have developed a secondary illness such as pneumonia.
Your physician can evaluate you, and determine whether there is a complication of you flu illness.