Am i unimportant to them?

today is my birthday. my bf wished me at 12 and he stayed on the call till 12:10 or sumn. then i told my mom who was slightly asleep to wake up for a bit so that we can cut the cake together. she's all i have and i thought my brother wont be joining me. so i got all pretty and ready and my brother came too so i was happy thinking he'll join us. but then he started to argue with mom about something which could've waited btw. i saw the table where I'm supposed to put the cake was incredibly messed up bc of my bro. during his bday, i cleaned the table so he could have a clean place. but my birthday??? and when i was calling out to my mom, she was busy arguing with him. i didnt know that discussion was more important than my birthday. i couldn't hold it in. i cut the cake myself with no one singing happy birthday.i couldn't eat the cake. i went straight to the bathroom and started crying and when my mom noticed she called out to me. i was too sad that time so i constantly told her to go away. after that she started blaming that it was my fault, i should've waited for her and shouldn't have talked with my bf sm. idk what to feel. 2 hrs into 16 and i already bawled my eyes out. it hurts. it hurts sm.