Make or break relationship

So me and my boyfriend have been together for nearly 7 months and tomorrow we’re going to Paris with his family for a few days. I know it doesn’t sound like we’ve been together for a long time but we’ve been through a lot together and we basically lived with each other for a few months. The only thing is all we do is bicker and it’s like we have really good days or really bad days. I suffer from severe anxiety and depression and that affects our relationship a lot because I’m worried a lot of the time. I get serious separation anxiety from him and a few other people I’m close to but all he does is moan at me when I feel like shit and tells me to stop being so negative when he doesn’t realise I can’t always just snap out of it. He is lovely and he’s like my best friend and he has been there for me through everything, but I’m so so drained of arguing. The last few days I just haven’t wanted to speak to him and I don’t know why. We’ve been like this for weeks now and I know soon enough one of us will snap. I just feel like everything’s always my fault and I don’t know what to do. Im hoping this trip away will help me realise what’s for the best and what isn’t, but I’m having doubts. Please help me!!