Too many arguments lately

I’m scared to lose him and I’m slowly turning into his ex who was always bitching about everything and he used to tell me too. Now I’m doing it . It’s because everything he does is wrong... annoying and not helping with our trust so I have no choice but to bring these issues up I refuse to ignore it maybe I should go about it in more calm and collective way but how do u hold things in and learn to let go and not assume so much or think so wrong ? I’m starting to believe something is wrong with me or that I’m crazy cs any small thing he does wrong I’m calling him to confront him and even bringing it up at th wrong times while he’s at work how do I hold things in like a normal girl and not be so crazy like this sometimes I read posts like I saw something I. His phone and waited till th next day to ask him I’m like are u serious I wish I was like that too but I will never wait I get too mad