Thanks for asking the query,
Tooth pain indicates infection of the tooth involving the pulpal tissues, such type of infected tooth needs to be root canal
treated to save it permanently.
I would suggest you to visit a Dentist
get a thorough clinical checkup done take an x-ray of the tooth and start with the treatment.
Take complete course of antibiotics and analgesics.
For sinusitis i would suggest you to consult an ENT specialist
Maintain a good oral hygiene
Take antiseptic mouthwash rinses twice daily.
Hope this helps out.