Heat rash, allergy? Please help!

Claudia • Dog mom and regular mom. ✌🏽

Hey everyone. My daughter is a month old and she’s had these bumps all over her face for about 2 weeks now. The doctor said it was acne (before it got this bad) and now it’s all over her chest and her arms. The arms just popped up recently. I use lavender Johnson and Johnson baby wash and their lotion. She also gets hot a lot. Her skin isn’t dry. What does it look like and how can I fix it?