tooth questions

J

my son is 5 months old and has his 2 bottom teeth. his cheeks have been red the last two days, he has been super clingy, and very tired. he doesnt have a fever but has a runny nose. he is constantly biting down on his thumbs. Are his symptoms related to.continued teething with a cold? I know hes going through a leap too so i dont know if its just all 3 things going on at once making him worse.