Is the heat affecting them?

Is anyone else’s baby being affected by the heat. She is six days old. She’s normally quite calm throughout the day, takes Expressed breast milk in the bottle at regular intervals and will then sleep but yesterday she was so distressed, red and crying regularly throughout the day. It felt like she was still showing hunger cues even after she had been fed…We barely got her to settle all day despite burping, winding, feeding, soothing…felt like nothing worked…!