May I know if it is normal for women to have darker skin at the areas of armpits, inner thighs, etc during pregnancy? What can we do about it? Thanks.

Yes, darker skin in those areas due to hormone changes in time of pregnancy. Not much we can do to get rid of it. It dont work for me at least (lightening cream & wash). It will go away as soon as you have deliver your baby. Magic! Lol