Lorazepam = Ativan (benzodiazepine)
Have benzo's been a problem for you in the past? Are they your 'drug of choice'?
My own experience is to try and 'gut it out', get through the hard time with the thought in mind that the lorazepam is there if you need it. Sometimes just knowing it is within reach is comforting.
Would it constitute a relapse? Not if taken as prescribed, in my opinion.
(I've always said that I'll take benzo's before I'd drink, and/or before I'd shoot myself.)