My FIL is such an asshole and I'm not in a mood to deal with his shit. I'm cramping, I'm stressed,…

My FIL is such an asshole and I'm not in a mood to deal with his shit. I'm cramping, I'm stressed, I'm tired, I'm constantly in pain, and my son is not in a good mood which puts me in a worse mood. He does NOT want to see my ugly side. He needs to step back before I really lose my shit cause I'm about there. I replied nicely to him this one time. I won't be nice next time. Even my husband is wondering what the hell his problem is and who he thinks he is to talk to me like that.