Hello ma'am and welcome.Pregnancy
can cause various changes in the body, and if at all you are experiencing dryness during sexual intercourse as well, you could speak to your doctor about this.
As for the current presentation, it is of course not normal and it would be best if you could visit your doctor for a physical examination before applying anything to the affected region. Application of substances which may not be sterile to a sensitive region with cracks in the skin can result in infections and so it would be best to get examined first ma'am.
Hope this helps.