There is an option for female-breastfeeding and female-pregnant, but not one for both. I'm both pregnant and breastfeeding and would like to know what I should be eating as accurately as possible. Any suggestions?
There are a lot of factors that will influence your energy needs in pregnancy, including your weight pre-pregnancy, as well as the trimester you are in. I would also consider how old your infant is. If breastmilk is not the main source of your infant's dietary intake (i.e. your infant is older than 1 year), you don't need to worry too much about eating more. In addition, energy needs in pregnancy only increase in the 2nd and 3rd trimester.
To answer your question, my advice would be to eat based on hunger in your first trimester, ensuring that you have larger meals and/or additional snacks to meet calorie needs in the 2nd and 3rd trimester (according to the pregnancy setting in Cronometer).
You may also find this Cronometer blog helpful on your journey.