My son is 6 months old started teething for a few days now. Has been on topfeed since birth. As per age his feed is changed from nan pro 1 to nan pro 2 and also we have started giving cerelac for 3 days now.� Eversince the diet is changed� there is a problem is of very tight and painful stool discharge 3 to 5 times a day. Since yesterday� cerelac is stopped and liquid diet is restored besides water mixed with sugar. From Today afternoon we are also giving colicaid however, no relief as of now. Kindly advise. Thank you.