She has a rare form of narcolepsy with cataplexy forcing her to sleep for 13 hours a day.
It means the mum’s body ‘goes to sleep’ when she hears a joke, gets really upset or even when she is having s3x.
But it has less amusing side effects, like super-vivid frightening dreams and pre-sleep hallucinations which make her see shadowy figures in her bedroom.
The pregnant mum from Nottingham said: “One minute I’ll be there in stitches laughing my head off, not able to stop and the next moment my head is on my chest or I’m lying on the floor. “I’m fully awake, I can hear everything, but I can’t talk and I can’t move. “I can’t respond or snap out of it until the emotion stops and to every other person, it looks like I have fallen asleep. “It happens when I orgasm too. When me and my partner were first dating it was near enough every time. “It might sound funny – and I do have to try and be light-hearted about it – but it’s horrible really. “I just had to explain to him that it’s only going to happen when he makes me feel at my very best, but it’s not ideal.” Jessica started to experience extreme exhaustion aged 15 and found herself falling asleep in lessons, on the bus and even mid-conversation.