Baby doesnt poop after having Rotavirus vaccinr

Hi mommies. Meron po bang may alam ng same situation ni baby ko na after marotavirus vaccine hndi na nagpoop and tumigas ang poop? Ngprobiotics, laxative, massage, and palit na ng milk si baby (as per pedia's recom) hndi prin sya ngpoopoo everyday. Meron po kyong alam na best solution for this? Formula fed po sya. Thank you!