Thanks for posting your query,
As your baby is of 14 month old,the swollen gums
may be due to the result of erupting milk teeth.
You can give carrot pieces to chew to your baby as it can enhance tooth eruption
Please do wait until the tooth erupts.
If symptoms persisits more than 2 months time,please do visit a dentist
Always clean your baby'S mouth with moist cotton after every feed.
Teething usually causes,irritation,fever,diarrhoea,nausea ,headache,restlessness
Teeth rings can be given to bite on for your child.
hope this helps.