Help!!

Ally • Tue, Sep 24

Little man is 12w today, he has been really fussy the last few days and sleeping a lot but not for long periods of time and won't let me put him down while sleeping. He still sleeps pretty good at night though. He is teething but this is more than that. He is puking after every feed. He is formula fed on similac sensitive. Could this be a leap? Help please