Hey mommy! Dahil yan sa likod ng tenya malapit sa batok, importante talaga na ipakita mo yan sa pedia or doctor mo para malaman nila kung ano exactly yan, hindi kami makakasiguro dito, especially pag first time mo pa lang.
A few of us moms had similar concerns, and it's always better mag-consult na lang para peace of mind mo, yun! Basta kung lumalaki agad or may pus/signs of infection, go to the clinic or ER na agad ha. Sending you hugs, mommy, you're doing great asking!