Feel like I can't trust my husband (Insanely LONG)

I'm so lost. Let me give you a bread backstory. I've done one thing in my eyes that seems wrong (a few I don't think are, yet he believes are the utmost bretayal) The big thing was, when we only only been dating a month or two (a very rocky time for us. He would break up with me on a daily basis), I saw my ex. It was terrible I know, however I was hurt because I had planned a massive dinner at my house with a few friends and he refused to come. I was feeling hurt and alone, so I asked my ex (of 3 just over 3 years) to come instead. Now although this is bad in itself, this ex used to beat me regularly until one day I ended up in hospital, almost dead. I still went back though (as majority of DV women do) and my husband was the person to pull me away from this ex.
Now, that particular night, ex was there, everyone is sitting down eating, I'm not since I was so miserable, who turns up? My husband (we weren't married yet at the time). So I've had that held over me out whole relationship, fair enough. The other things he hold over me are silly. Like not letting go of my best friend because he believes she tried to break us up. She was just jealous at the beginning because she wanted to be with him and had just come out of a very bad relationship as well. I've also spoken to some very close male friends (purely platonic) while we were dating, he blew his top and I've never done it again. He continues to accuse me to this day that I still do talk to them and delete evidence and all the baloney. We have a 9 month old son together and basically, I don't have the time to be sneaking around behind his back (you feel me?)
So now on to the reason I'm posting this question. It all started with a box of Malteasers. When I was newly pregnant he bought me a massive box of Malteasers. I kept them unopened for about a week until I reeeeaaally wanted them. So the day arrives and I'm on my way home, super excited for the lighter way to enjoy chocolate that was supposed to be waiting for me. They were not. We were living with people at the time and he let me believe that it was the other girl in the house who ate them. For a whole month he let me believe this. Until I found the empty box stashed in one of his work boots in our room. At the time I laughed it off, now its getting worse. He still to this day tried to convince me that there was a massive lay by to deck out our sons room when I was pregnant. Nothing emerged from this magical lay by he still speaks of. He will occasionally go to his mothers house to see his brother and sister in law to get drunk. He won't tell me and will leave me at home, worried sick until I finally cave and at 9 o'clock at night message my sister in law and she tells me he's been there all along. Then the next day he'll come home and tell me work has been cancelled due to different reasons. On my birthday last year he told me he was just popping up to the shops to get me a present after dropping me at my family get together. He never came back. When I got back our room reeked of man juice (if you know what I mean ?) A few months later I found a receipt under the bed amoungst used tissues for $100 with of adult movies, purchased on my birthday. When confronted he told me one story that it was for us (yuck) then backflipped and said his friend bought them. Still says that to this day. The most recent development is when we moved out of our house into my mothers (so we could save for a house deposit) we had to get a storage unit for all out possessions. For quite a while now I've had this feeling it's gone. Most of my clothes, first ultrasound of our son, his toys, all our furniture and white goods (a house full of stuff all the sentimental things as well) gone. He tells me it comesbout every month but he's recently opened a new bank account for all our savings and what we don't spend goes in there. So how can the storage unit be paid?
I've called them and they will call me back tomorrow letting me know if it's still ours. I just don't know what to do anymore. Tonight is another one of those nights where he has taken off after work (after 4 days of splitting migraines so bad he couldn't talk, wouldn't let me take him to the doctor though) without telling me until I had to call the sister in law. I also had an Avon function to be at as well as pick up our sons professional photography pictures but of course watching the origin with his beloved brother and jack Daniels is far more important.
If you've made it this far Thank you!! I just don't know what to do anymore. What will I do if I find out we no longer have any belongings? I know I've made him out to be a total dick in this post however most of the time he is an amazing man and father. He works his guts out so I can stay at home with our son. He came from an extremely messed up upbringing so he's never been taught how to be responsible with money or what a proper relationship looks like but he does really try. I just don't know how to work with him so that things don't fall apart between us :'(
What should I do!!! (I won't leave. I made my vows and I'm sticking with them no matter what) Again, thank you if you made it this far!! ❤️