I agree with the above post, but I'd like to also add...what is your bottom number (diastolic)? If it's regularly over 95, then you should tell your doctor.
How long have you been off the lorezepam? Quitting benozo's can also cause a spike in BP, but it is usually temporary.
What is your weight/height?
Infrequent BP readings have low value. I urge you to record what your BP (& date/time of day) is over one or more weeks to get a better sense of your BP.
Usually the lowest value is the most useful value (spikes in BP due to recent activity, eating or anxiety are of less value to know). And a single reading of 157 ought not be worthy of upsetting you.