Body Acne

Lately I’ve been breaking out (like 3 zits, doesn’t seem like a lot but to me it is!) around my shoulders and on my back. They started off as zits, then they popped on their own (I never pop them and I never try to mess with them) and now they’re flat acne scars. How do I treat these ugly things?! It’s summer and I wanna wear tank tops and spaghetti strap dresses without feeling insecure. My last resort is to put concealer or something whenever I go out 😞