Is this normal?

Hi all, My 5MO is starting to poop after almost every feed since yesterday. Basically 3 out of the 5 milk sessions. Today since 1 am this morning, 2 out the 2 feeds. All of his stools are loose & watery. At the same time, passing urine is normal: changing diapers every 3 hours. Not fussy, no fever, active & finishes the whole bottle at every 4 hour window feed. He is on FM. Does this constitutes to diarrhea? Do I urgently need to bring him to the pediatrician? Thank you in advance. P.S. My sincere apologies for posting his soiled diaper.