Jenn Sterger, the former NFL reporter and current comedian who accused Super Bowl champion Brett Favre of sending her inappropriate text messages and pictures in 2008, revealed Friday that she had a double mastectomy this week because her implants "exploded."See? Your life doesn't seem that hard now, does it?Sterger, also known as the famous FSU cowgirl from the mid-2000s, said in a lengthy Instagram post that she's been dealing with pain in the…