From his comments, I'd say that he is emotionally abusing you.
Whether or not you looked different when you first married.
Whether or not you need to actually lose weight.
Whether or not he "feels something down there."
None of these things really matter.
What matters is the way he's getting these messages across - and the fact that they're so important to him, that he mentions them all the time!
Please consider that his comments don't mean ANYTHING except that he is currently being mean and small-minded. I would say from experience this situation has much more to do with him - his own insecurities - than with you.
And the bottom line is - really - how YOU feel about YOURself. If it ain't broke then there's no need to fix it. You don't sound broke to me.
I was in a 2-year relationship during which my DP told me I was fat, frequently. He told me I was unathletic and stupid. If I got upset by any of it he'd say, "Quit being a baby."
I was 8 stone at the time, had been skiing and running most of my life, & knew deep down I had every right to be hurt - that there was a proper way - a loving way - of saying things - the right way to talk to one's DP - but I could never articulate any of this!!
You are not the problem. The truth never mattered to my ex. He was seeing what he wanted to see, making it up, trying to isolate & control me. And even if you have a high BMI, who cares??? It's your DP's duty to love you for just who you are.
Please don't feel bad about yourself or feel you need to please him or cater to any of his ridiculous suggestions.
I'm so sorry you're in this situation.