Need advice Mamas' what's this?

Brittany • I ❤ my baby girl💖 my baby boy 💙 🥰🤰 God is always good 👌🛐 I got one on the way.

Baby girl started with one on her back a day ago and now ones on her arm.

We just moved into our new home.

I can't see any whiteheads.

I have no pets.

Looks like a bug bite of some kind.