One Month Ago I Had Serious Pain In My Left

One month ago I had serious pain in my left shoulder where I couldn't lift my arm. I attributed it to lots of push-ups...approximately a week later the pain mostly disappeared. Two weeks ago my left index finger tip and thumb went numb and have remained numb. I have also lost strength in my left shoulder where I'm unable to do a push-up. I'm 57 and weigh 195 lbs and have never had any serious health issues. Is this a stroke or Tia...