Yes it does . Anything you feel or have anger the baby can feel don't let things get to you I know it's hard cause are hormones but do it for your baby.
I think arguing with anyone especially people u love stresses everyone out so yes baby is stress if ur stress.
Does it stress you out? If you are stressed, it stresses baby out. Now normal everyday stress won't harm baby, but its best to keep large stressors to a minimum during pregnancy :)
I think it does. Im always arguing with my bf and I breastfeed now and I think she feels me being stressed from the arguing.