Hoping you can tell me, is boob job safe or worth it before having kids?

Yes: I am not sure if you are asking about implants or reduction, but both have small risk of complication (e.g. Implants might get infected, after reduction there might be a problem with viability and sensitivity of nipple/areola). However, a woman might not be able to breast feed a baby after a breast surgery.

Yes..: Many young women do this safely, and with high degrees of satisfaction. See your local board-certified plastic surgeon to discuss.