I feel like I'm suffocating in this house

I don't even know where to begin. I know my boyfriend, my brother and my mum, all the people who love me, I know they mean well but gosh I feel like I have to really keep my emotions in check most of the time. By the time the day is over and I reach my bed, I just breakdown in tears. My mum and my brother always are telling me I overreact to things too often and that I'm too sensitive or sometimes they all mistake me responding passionately as aggression but if I'm passionate I don't want to hold that in but I feel I'm forced to now and it feels awful. So so awful. I used to speak up about how I feel but it always lead to misunderstandings and I always end up feeling like the shitty person. It makes me question and think that maybe I am just a shitty and inconsiderate person. I don't want to keep my feelings locked up but I just feel like I'm left with no choice and I want out.