top 2 teeth

for the last month I could've sworn my 9month old was getting his top 2 it's been 4 weeks of drooling, random out burst, nawing and swollen gums but still not teeth?!?! does it really take this long?? just yesterday when I checked them I felt a bump where they poke out but no tooth. 😔 my poor guy, the bottom teeth were easy they just showed up one day!