How can i best take care of back sciatica pain?

NSAI's: Sciatica is not normal but will commonly go away with conservative treatment including rest and analgesic pain medications such as non steroidal anti-inflammatories. If it persists for more than 6 weeks or if it so severe you cannot tolerate it you should seek medical attention.

Core Exercises: Typically core strengthening exercises are the best to help relieve pressure and forces in the spine. I would try and google some or look them up on youtube to see descriptions. If you can do them yourself, wonderful otherwise ask your doctor to get a referral to a good physical therapist for further assistance.