Here's an article that addresses this exact issue. Click link below to read the entire post: Young kids touch themselves primarily for two reasons. The first is for pleasure. The second reason is for stress reduction and relaxation. Masturbation becomes goal-driven around age 10. What should you do if you find your child touching himself or herself? Keep in mind that reactions matter. When adults become angry or tell their children that masturbating is wrong, it creates a lot of tension for them, Swanson says. "You want to teach children that it's OK to explore their bodies."
What I found interesting in the article was the discussion of the time kids spend in school in relation to other countries. A quote: Japanese high school children go to school for 240 days per year. Add that up over 12 years, and it comes out to an extra 720 more classroom days; or four more years of instruction compared to U.S. schools.
Personally, I think American kids could benefit from more time in the classroom - not to the point that increases stress, but to make sure our kids have skills to compete in a the world economy.
Kathleen - Excellent questions. This behavior could very well be related to stress.
Here's a link to the WebMD Stress Management Center Although written for adults, there are lots of resources to help identify (and cope) with stress - you might recognize other signs with your daughter.
Hi Kelly - welcome to this community! I think a visit to your son's pediatrician would be entirely appropriate. Not only to rule out any medical problems but to get advice or possibly referral for services that could guide your family.
A new baby under any circumstances is stressful and it seems like you have additional challenges.
Would your son be opposed to wearing a pull up to bed? Just to make your day easier for now!