Mixed lorazepam and alcohol

So earlier today I took a total of 1.5mg of lorazepam for severe anxiety that I have on airplanes. Then once I got to my work event we had a few drinks. I drank 3 beers. I don’t feel drunk right now but definitely a more loopy and weird feeling. I’m really tired from the traveling but I’m scared to fall asleep and not wake up. I had my last lorazepam at 1pm and then had a beer around 8.