Pain and temperature sensitivity means either your tooth is infected, or may be some inner layers of tooth is exposed. Consult with doctor online or offline for better guidance and treatment options. As without full history and viewing it's difficult to advise treatment options.

Hello Since you’re having pain and sensitivity in your left side which increases at night, this is clear indicative of some infection in the tooth. You need to visit a dentist get a proper checkup done and treatment subsequently. For the time being you can just do warm Saline rinses (Take half a glass luke warm water and add a pinch of salt and do rinsing with it at least three times a day after meals). I would recommend you not to rely on medicines because this is something that cannot be cured at home

Hello Having pain and sensitivity in the left side especially at night is indicative that there is some infection in the tooth. It might be the wisdom tooth that is troubling you or any other tooth where the decay has reached the nerves of the tooth. It might require root canal treatment. In both the cases you need to visit your dentist and get a checkup done. He will take some x-rays and properly guide you what treatment is needed.

Go ahead near by dentist

Hello, you need to show it to any nearby Dentist. Taking medications won't help. One needs to see whether a tooth needs a root canal therapy or just a restoration. In case it is a wisdom tooth, it might go for extraction since a wisdom tooth doesn't aid in chewing and is difficult to treat, hence it is advisable to get extracted.