I know this isn’t the right group for this but I’m desperate for help😭

Yesterday i noticed a little bump on my daughters leg (9m) and it was somewhat red around it. Well tonight after her bath I noticed that the redness is slightly worse. I don’t know if it’s a bite of some sort or what. We’ve noticed a couple of spiders in the house but have got spray for them. She isn’t acting any differently than usual, but I’m honestly freaking out. Like I’m not gonna be able to sleep😩 Should I make an appointment with her doctor to see what it is? Or just wait and see if it gets better? I really need opinions/advice