Thanks for asking the query,
Tooth pain along with swelling indicates infection in the tooth that has spread to the adjoining tissue leading to formation of abscess
Tenderness in the tooth is also present in sinus
You are supposed to visit to Dentist
and get the checkup done.
Take an x-ray of the tooth depending on which the treatment is decided
Take a course of antibiotic and analgesic
take tab flemiclav 625mg TDS tab brufen
TDS, this will give a temporary relief . Unless the tooth is treated completely you will face infection and pain.
At home take saline water gargles , use antiseptic mouthwash gargles twice daily , maintain a good oral hygiene .
Hope this helps out.