6 month Vaccination side effect

Hi mummies, my LO is 6 months and just took his 6in1 and hepb jab this morning. He was very active and cheerful, right after his afternoon nap. He woke up fussy and crying non stop. He got no fever but only want to cling on to his mother and sleep. He have been sleeping so much, if we disturb him he will cry more. Anyone got similar experienced?