no one can hear me.
Is that conclusion based on no one has responded to your "KD8UEI, monitoring" calls, or have you actually tried calling people you knew were on frequency or actively talking and they didn't respond?
Few hams will turn down a direct call, even if you're noisy but far fewer will respond to a "monitoring" call. One option is to get another ham on the phone and coordinate a QSO that way. Try other repeaters to maximize your odds. Having a better antenna option handy like a mag mount or groundplane you can use to improve your signal would be something to work on in the mean time.