Who took your blood pressure, do you know it was an accurate reading? If the cuff was too small it can cause the reading to be high so make sure you are using the right sized cuff.
Also, did you just get done exercising, smoking, are you very stressed out or in pain?? That can cause your blood pressure to shoot up really high.
Overall, yes, if 160/102 is your actual blood pressure reading, (I mean, your not in pain, your not severely stressed, you didn't just get done exercising or chain-smoking) yes, you need to be concerned. The diastolic number (the bottom number) is what is reallly concerning to me. You should definitely call your doctor and see if they can get you in, you may need a blood pressure medication or need to make some lifestyle changes to get your blood pressure under control.
High blood pressure should NEVER be left untreated, it can cause heart attack, stroke, aneurysms, kidney failure, etc.....) It really is a silent killer if left untreated, but good news is, it can be controlled fairly easily with lifestyle changes and medication if needed.
I would suggest checking your blood pressure again in the opposite arm in about 20 minutes, if it is still high, like I said, call your Dr. immediately.
If you give me more details I will be able to give you better advice. Thanks.