Hi, I'd like to help you with your question.
You are right, it probably wasn't the best idea in the world to take the Lorazepam and the alcohol together. Mixing the two can cause depressed heart rhythm and suppressed breathing. In other words, you can stop your heart and/or your breathing.
You should get checked out by your doctor or at least contact him/her to be sure. But if you are ok this morning and are otherwise feeling alright even with the problems with your motor functions, then it is probably working it's way through your system.
I hope this has helped,