Post OP yellow liquid coming out of nipple. Is it normal?

I am now 1 week post OP, breast augmentation, implant of cohesive gel under the muscle. My left breast is more tense than the right one and hurt a little when I squeeze it (post op massage). My concern is that there’s some yellow liquid coming out from my nipple... I called at my surgeon office and the secretary said that it is normal, but is it for real? Thank you!