Girls, can you tell me, yesterday my son was really fussy, it turned o…

Girls, can you tell me, yesterday my son was really fussy, it turned out that his tooth is cutting, the upper one but not the central one, and the first lateral or even canine ?‍♀️ We're 6 months old, we already have two lower incisors. True, one wide one is very wide) but it's not critical like with the daughter! Tell me, has anyone had this happen and what did they do? Or is there nothing serious about it?