family&marriage problems

I honestly dont know where to begin. Saturday like a few hours ago saturday we celebrated my moms birthday even tho its today sunday. well all was great my 2 brothers and husband were talking about what to do on vacation. Well later like 30 mins. ago my husband and eldest brother (family of 6 siblings including me) were having a heated dispute because my husband suggested that we all could get on the sprint family plan and it just went off they were basically fighting over how much it would actually cost. My husband is visably drunk and my brother is somewhat buzzed but this talk about something stupid turn like in a somewhat way war over who was right. My mom barely turned 60 so it was a big deal and we kinda ruined her birthday hours since it was like 1 am here. And honestly by we i mean them 2 my eldest brother is going to be 41 in nov and my hubby is 28 but like they behaved childish. I know my husband isnt like totally a nice guy or anything well with me but he does get along although i know they dnt like him. Well my mom sat down on a chair infront of me and gave me the eyes to like go home cuz she didnt want them to fight oh did i mention about the damn family plan. Uhh i didnt want to fight but this shit is stupid i respect my brother not only cuz he is a sibling but an army vet and i obviously respect my husband. So my other brother helped me take the kids to the car while my husband stayed and said things to my eldest. Then he tells me once he is outside to go in the car cuz he was going to talk to my bro. I dnt know what was said all i know is that he said he doesnt like the way he is treated by the eldest. So my brother was like well whatever is going on yall gotta fix cuz this isnt good for my sis who is pregnant or my mom. Well we leave and on our way home he yells at me saying that i shouldnt get involved that i am stupid and shit like that but not as nice. Then we get home and he calls his brother who is in TN. and tells him that he is so fucking mad and that he wants to fight my fucking brother who he said is a so called veteran which he is he served 10 yrs. It jist pisses me off that dammit nobody can get along or make it last. They talk about going on vacation on minute and the next argue over fucking nothing. I am so tired of this bullshit im tired of feeling like im between a rock and hard place cuz he also like to talk shit about my fam to my face. I just dnt know what to do i feel like my husband started it by saying my bro was saying he was stupid when he didnt he was explaining how that plan wasnt cheap and my husband was drunk so he thought he was like belittling him. i dnt know wat to do anymore 😢😢😢😢