If you're looking for a good dentist,
https://www.bridgedentalsmiles.co.uk/treatments/tooth-whitening/ is a great option for teeth whitening by professionals. I am more than confident that if you get your teeth whitened during pregnancy, it will only be good for your oral health. When I was pregnant with my second son, I drank a lot of decaffeinated coffee and tea, which caused my tooth enamel to darken, and it looked ugly and made me uncomfortable. First of all, it's good that I found this particular dentist and still decided to have my teeth whitened.