I was in a relationship with someone who behaved like this. Fortunately it was in the days before the Internet and mobile phones, but had they been around he would have undoubtedly tracked me. I was 18, it was my first adult relationship and he was 33.
So much of what you said rings bells. I genuinely believed that he was acting out of loving concern. He made me give up a job I loved, stopped me from going to university and, when I got a great job in the city attempted to scupper it by phoning me all the time on my work number.
I remember rows about my ignorance and lack of respect because I didn't ask his permission to put the electric fire on when I was freezing cold, and instructions about what underwear I was allowed to wear if I was going to an evening class. I also had to make sure that I put extra effort into looking nice for when he came home, put on a skirt and some make-up. Any time I didn't do or perform as expected, I was 'selfish'. Does your DH buy clothes for you too because he knows what suits you?
He also followed me around the house including when I had a bath. I knew it wasn't 'right' but have a dysfunctional, EA mother who sided with him as did his mother. I was made to feel ignorant/unreasonable/ungrateful and undeserving if I attempted to free myself from his control.
He used to control what I ate, once he burst into tears because he couldn't believe that I had the same portion size as him, and that I would never lose the weight I should if I continued to be so greedy. By eating what I wanted demonstrated a selfish lack of respect. (I was a size 10-12 btw).
He even put up a chart on the wall called "wazzock's weight". Wazzock being his pet name for me and I had to weigh in every few days.
He was never ever violent. Until I tried to leave and he flushed my car keys down the loo and said that "you either leave here in a body bag or not at all". Looking back though he did things like locking me outside all night in the snow when I had been 'naughty'. Or putting plastic spiders (I am seriously phobic) in my bed as a punishment. He never said sorry because everything was my fault and therefore I needed to learn because I was so immature and thoughtless.
My parents told me that I would never be able to find anyone else and spent years trying to coerce me to get back with him. My mum was having some kind of menopausal breakdown at the time.
But as soon as I left I got a job as an air hostess with the airline with the red uniform which he'd never have allowed me to do which proved I was neither fat, ugly or ignorant and went on to a successful career and 5 wonderful children.
Sorry I've rambled, what I am trying to say is that I've been where you are. I thought this was all normal loving behaviour and as so many people have said, it really isn't.
I can't tell you what you should or must do, but once I made the decision to go, despite the fact it was so fraught, I immediately felt as though a weight has been lifted.
I knew nothing about Women's Aid, otherwise I would have gone to them, but leaving in the way I did, put my life at risk. I left when he was there. Please do be careful.