vomitting after straining to poop?

Hi mommys, 1 month na si baby. recently nag vovommit si baby, parang spit up lang consistency tsaka color pero ang difference is medyo madami yung vommit nya tsaka projectile. Pero ginagawa nya lang yun kapag nag ttry sya mag poop after feeding, after feed, namumula sya kasi hirap tumae tapos yun, after non, magvovommit na. Dapat ba mag worry ako? Normal lang ba? May iba bang mommys dito na ganon din LO?