I’m tired

My boyfriend constantly thinks I’m cheating. He always accuses me of not loving him. Whenever I don’t reply to his texts fast enough he sends me this bullshit. I’m just so tired of this. I don’t think he understands how much I really do at work. I work 6 days a week even pulling double most days, I end up being at work for 15 hours. And yes I was kinda harsh when replying saying he needs to chill but I get the same bullshit every damn day. The other day I fell asleep at 7pm and I had 27 missed calls from him and 32 texts 😭 I don’t know what to do to prove to him I’m not cheating and that I do love him.