It is absolutely safe! Extra fibre will help with digestion as it gets more difficult to poop into the later part of pregnancy. Keep an eye on the sugar (eg honey, dried fruits or juice for Bircher muesli if you happen to add any) and maybe change to plant based milk such as almond/soy to increase calcium. If you are more comfortable with dairy, just take that extra step and ensure it’s pasteurised.
Also best to keep this a habit cause it’s an excellent lactation booster for breastfeeding mommies (if you are choosing bm for your baby)
Fantastic way of keeping yourself nourished 💯💯 all the best with your pregnancy journey ❤️
Alicia You