Im pregnant and my sister annoys the fuck out of me

Idk why but im 28 weeks pregnant and this is my first pregnancy.. well my sister has been getting under my skin alot lately.. and shes not doing nothing to me thats bad. But sometimes she can have an attitude with me. Just her presence annoys me so much , shes also a lazy ass slobb that doesnt do nothing !!!!!! All she does is be in her room and on her phone . My mom spoils her because she is the baby of the family and i am the OLDEST! shes 17 years old and im 25. They say though that if you are mad at someone during ur pregnancy, that the baby will look like that person? (Has to be family) is this true????!! Because shes the only one that i been getting mad at 😤 also my baby daddy too he irks me alot!!! But not all the time like my sister which i live with (i live with my parents)