Is it normal that i dont express my feelings and thoughts to boyfriend

My boyfriend and I are fighting a lot lately and he says it's because I don't talk to him enough. We just moved to a new town and are just starting out so life is pretty hard. He recently lost his job so I am the only making an income, you can see how that would be pretty stressful. I do admit I have been a little testy with him lately because of the stress I am under. He tries to get me to talk about what is bothering me but I usually just shrug it off and walk away because I know it will just cause an argument but than me not talking to him makes him feel like I don't care about him anymore which is definitely not the case. I also have a lot of insecurities which makes me a little sad from time to time which bugs him and brings us back to not expressing myself. Sometimes he manages to get me to tell him what they are but he doesn't try to make me feel better if anything he just makes me feel worse. He basically makes points as to why I feel like that which just makes me want to shut myself off from the world. It's getting to the point where it feels like our only option is to go our separate ways but that's the last thing I want. We were friends for a long time before we started dating and we were basically in love the first day we met, just to chicken to do anything about it. My whole life I got the impression that nobody cares about my problems and I'm just over exaggerating, I got used to thinking like that and just kept all my opinions and thoughts to myself but now it's a huge problem. I'v kept things bottled up for so long and just kept adding to it over the years now I don't even know where or how to start. I need advice on how to express myself. Please.