For some women, it’s a mouth that tastes like a bag of coins, while others go off the smell of their usual washing powder or favourite perfume.
‘The exact cause of these heightened senses is unknown, but they’re thought to be linked to changing oestrogen levels,’ says midwife and hypnotherapist Lorraine Berry.
And you may well also get a desire to eat specific things. Common cravings include sour fruit, ice and salty or spicy snacks. Some women even crave non-food items, such as coal or paint, a condition known as pica.
‘There’s no evidence to suggest cravings indicate any dietary deficiencies, and they often pass quickly,’ says Dr Virginia Beckett, from the Royal College of Obstetricians and Gynaecologists.
Beat it: To counter nausea triggered by an aversion to scents, keep a tissue sprinkled with a few drops of peppermint oil in your bag. If what you’re craving food-wise is reasonably healthy, go for it. But exercise restraint if it’s sugary treats – try dried fruit instead. If you’re worried you’re craving anything unsafe, see your GP.