Deli meat!

I'm now 31 weeks, i tried avoiding anything hatmful all these week, had a really healthy diet throughout this pregnancy! Until today; i went out with friends and totally forgot im preggo for a second ( so dumb i know) i had a big roast beef sandwich and happily went bavk home!! Then i realized omg i shouldn't eat deli meat!!!! I dont remember if it was heated or was just cold, but i'm worried n acared to death!!! Please share any experience if you had, stress is killing me right now!!!!