There were three periods in my life when I had very similar dreams Tilly,
When we first got married, I’d wake up sitting at the top of the stairs convinced I’d been electrocuted, awful feeling.
Then when we had our first baby, I’d wake up hunting under the covers to the bottom of the bed for the new baby, thinking it had suffocated.
Then when one of our children was diagnosed with a life changing condition, I’d wake in a cold sweat thinking I’d left the new puppy we had, outside, in the cold, terrified and shivering.
Maybe there’s something you’re subconsciously worrying about which has unsettled you.