Hindi talaga normal at 3 months, anak, usually ang teeth ay lumalabas around 6 months onwards, kaya I'd suggest checking with your pedia just to be sure kung ano talaga ang nakikita mo sa gums niya. A few of us moms had similar worries, and it turned out minsan lang ito gum swelling or kung may actual tooth, basta confirmed ng doctor na okay lang yan sa development ng baby!