Body temp

So I was the one person FREEZING to death in the shade in the 41°C heatwave, I'm the person who shivers in bed for hours until there is a heat source. I'm the one who loves saunas and only gets out due to boredom. I also rarely sweat even if I can't breathe during a workout! However despite my bbt only being 0.8°C hotter than normal I can't cope!!! I strip my clothes off at night but I need the weight of the blankets to get to sleep but it's too hot! We have no heating on and the window open so the room temp is averaging 15°C at night but I'm still roasting! However if I kick off the blankets I do get cold and wake up because I need the feel of them. I tried a sheet but it's just not heavy enough.