My Alexa has just whispered to me and I couldn’t understand what it said, I asked her to repeat and she told me there was nothing to repeat. I’ve played it back in the app and it sounded like a male saying “Alexa drop” it’s nobody in our house and we dont use Alexa drop. I have unplugged it but feel (stupidly) frightened by it. My husband is on a nightshift - I don’t think I’ll sleep. My daughter doesn’t seem to think that anyone can just drop in but if it wasn’t that, what was it?