Sciatic Pain!

Who else has had sciatic pain??? I’ve had it since I was about 13-14 weeks! Went for a prenatal massage, and it helped a lot... but the pain came back 3-4 days later.... OB said to continue with the prenatal massages but they are going to be expensive if I continue to go every week or every 2 weeks.... anyone else have at home way to help with sciatic pain?

Just got myself an exercise ball to help with my posture and do small exercises, hoping this will somewhat help! I’m 24 weeks + 3, hoping I can find a way to relieve this pain before it gets worst later on when my stomach is getting bigger and causing even more pain.

Taking all recommendations! Please!