Postpartum, in-laws, advice.

I’m 7 weeks postpartum and I can’t stand my in-laws. Before getting pregnant we had a good relationship but after having my baby everything they say to me irritates me. If they offer advice about my baby I ignore them. I’m at the point where I don’t even call my mother in law if she doesn’t call me. Is this just apart of postpartum? Also my partner upsets me a lot. At times he doesn’t have to do anything. Since night our baby was miserable and he offered to take the baby and I got upset with him. If make a decision regarding our baby and he goes against it I get upset with him and go silent. I’m just angry all of the time especially towards my partner and my in-laws. Is this all just apart or postpartum? Will things get better?