First of all let me congratulate you for becoming mom.
Children of this age cannot spit out the sputum during the cough
. They swallow it down, which can result in change in consistency of stool.
As small children try to put anything in mouth, chances of gastrointestinal infection
are also there.
Stomach making noices can be due to gas, as a child swallows air also while feeding.
It is advisable that get your child examined by a Paeditrician at the earliest.
Always take care of the hygeinic conditions around the child's surroundings. Keep his hands clean as babies try to put their hands in their mouth and always give pure filtered water for drinking.
Always get your child vaccinated at time as this prevents many infections.
I hope this is of help to you. If you have any other query,I will be happy to help.