Thanks for posting your query.
I would suggest you to visit a dentist
The cause of toothache has to be ruled out.
Impacted or decayed tooth has to be extracted.
Maintain oral hygiene
Please do not take medicines without medical supervision.
Regarding the running nose and cold
,please do visit a physician.
Brush and floss your teeth daily.
Frequent warm saline and chlorhexidine
mouthrinse can be done.