So my baby has a boil on her butt ! 😣😣 and it’s big ... do I take her In for it ? I notice a little…

So my baby has a boil on her butt ! 😣😣 and it’s big ... do I take her In for it ? I notice a little bump on her butt like a day ago or so but I didn’t think nothing off it tho thought it would just go away but when I took her diaper off it was big looking like a pimple o didn’t know what it was so I called her grandma and told her she said it looks like a boil and to put something on it and if it doesn’t go away by today then I need to take her in caise she’ll probably need antibiotics for it and get it drained.