Is it normal na super itchy ang nipples/boobs while pregnant?

Currently on my 16th week and suuuuuuuper itchy ng nipples and buong boobs ko. Huhuhu is this normal? Nilalagyan ko na sya ng oil para ma-moisturize pero ganun pa rin. Yung tummy ko hindi na nangangati since i started using the oil. Pero yung nipple and boobs ko super itchy. I use this oil sa photo.