Weird Rash question

My daughter keeps getting these patches of red dots. She’s got them on her lower stomach, right side of her forehead and her nose. Some of them almost look like blood blisters. They are tiny dots they are not raised either... I’m calling the pediatrician tomorrow. She also has a rash on her vagina lips. I’m very diligent in her changes and cleaning her and we do baking soda baths. She did go in a public pool this last weekend right before it appeared and I feel like it’s probably a fungal or Bacterial infection vs like heat rash. She doesn’t have a fever. She’s not teething. She also has been having a hard time going down to sleep but she laughs when we pick her up so I don’t think she’s uncomfortable I think she just misses us.