Yes dry and easily irritable skin is common in pregnancy. Just to be safe you should bring the issue up with your Dr. Most likely it's nothing but when my sister had this problem they ran some tests just to be safe.
Dry skin is common is pregnancy, but something to watch for is stretch marks. The skin starts to stretch during pregnancy, & scratching makes this worse.
I have suffered from dry skin for years (phorsis ) excuse my spelling. And during pregnancy it gets worse. So I use the coconut vaseline spray. A can cost about 4-5 $ and it's great for dry skin!!!
Or they do have lotion for pregnancy to prevent stretch marks and sooth dry skin. Hope this helps!!