Hello ?? We've had a dry cough for 5 months ? What can we give the chi…

Hello ?? We've had a dry cough for 5 months ? What can we give the child ? and plus he has diarrhea that is very loose and cries from pain ? What can we do ?? Could it be related to diet? I give him one banana and a cookie 3 times a day ? Maybe from the banana?! Earlier I didn't give him a banana then it was normal ☹️