Weird patches?

At first it was only like one or two but now both my arms are full of them too to bottom... Is it a normal pregnancy thing will it go away after ? I didn't have this with my first. My doctor said its normal but I googled it and I have symptoms of something like lichen something it says like weird patches and a very itchy vagina ( my vagina has itches for a month and my dr tested me for yeast and I have nothing but hasn't helped me with that either) but besides the point .....