This is likely normal, possibly related to teething....

If baby is active and playful,  no fever,  passing adequate urine ie.  minimum 6-8 times per day, then no need to worry for motion ( once in 7 days or  15 times per day-  both conditions normal). Don't give so much importance to motion unless blood in motion or bad smelling motion or white colour motion. Keep ur baby well hydrated Continue to give breast feed as well, till 1.5 yrs of age. Continue to give water and  all other food items as before(no food restrictions). Wait for some more days Everything will be alright. If blood in motion/persistant foul smelling motion or less urine output then consult with  ur nearest pediatrician, He will giude you in a better way.