Son Turned On By My Big Belly

It's kind of weird and I'm kind of concerned. I'm a plus-sized woman with this big fat wrinkling stomach that look like I'm pregnant with these horrible stretch marks. My navel is like this long upside down V and since I had a C section done to have my son, I got this deep scar that goes down to my private area.

Basically, I hate my stomach. It doesn't even feel like it's a part of my body. I can't even walk around without it jiggling and swaying all over the place and no matter how much I try to exercise it away, it won't GO away. Like... all the fat and most of my weight goes right to my stomach.

So to get to what I'm here for, my son is always wanting to rub my stomach. He likes to rub my belly fat and most of the time he doesn't bother asking as he just pulls my shirt up and rub my stomach. I would even notice a bulge in his pants while he does this to me. He even said to me that he wants to put a baby in me, as he was rubbing my stomach. And it's not just rubbing it, he keeps putting his finger in my navel and tracing his finger over my C-section scar.

When I asked him why he likes rubbing my stomach so much, he said it's because I look so pregnant.

As I mostly walk around the house in nothing more than a shirt and panties he even tried to touch me, down there, and when i whipped his hand away and tried to , as nicely as i could, explain to him that he can't touch me or another female down there, he got mad at me. I even agreed to letting him rub my big potbelly since he likes it so much but that was so we could talk about it. As we talked about it he seemed kind of serious about wanting to carry his baby in this belly that's sitting on my lap. I tried to tell him about how wrong it is to impregnate his own mother but he won't understand.

Like... does my own son like me romantically? And why would he want to impregnate his own mom? The belly rubbing, although it feels weird, but why is he so turned on by this belly? That belongs to his own mother at that? My husband's not here to help out with this issue (I prefer against saying what happened).

Tsk. And I thought this stomach that would hang over my pubic mound would be a turnoff for a lot of guys, especially with this c-section scar but I guess not my son!

What should I do?