Don't worry, it's just fine.
A rough guide to your heart rate and exercise zones is to take your age and subtract it from 220. That's roughly your max heart rate -- so for you, your max HR is 195.
Then you can figure out what intensity zone you're in when you exercise:
65 - 75% of your max is low intensity
75 - 85% is moderate intensity
85 - 90% is high intensity
For you:
127 - 146 is low intensity
147 - 166 is moderate intensity
167 - 176 is high intensity
So you were right at the edge of moderate to high intensity exercise, which is a good place to be. Keep up the good work!