I just have one it just came out of the no where I'm also 29 weeks
I had this.. Mine weren't itchy though and it figured out it was from the coconut oil I was using. Maybe it's from your lotion.. Did you start using something new? Or it could be a rash or puppps.
Check with your doctor, I know someone in my prenatal class actually had the same thing.. You can get a certain cream for it
If it's itchy then they think puppe if it's not then there's actually something called a pregnancy rash
I had bumps all over that I thought were bug bites and turned out it was pupps I had to get a cream for it thru the doctor