I was heavy as an adolescent and teen, gained in college as well. I remember being teased a bit about my weight, but I don't really recall feeling shame. Not that I was really fat, just overweight. Even back then I "tingles" (for lack of a better term) for the fetish of wanting to gain and be fat. Today, as I deliberately gain, but fairly slowly and do worry about "what people will say". Though it is obvious that I have put on weight, my wife has said nothing and in fact seems to have become a subtle encourager, which I have been, as she is a BBW. My age (>60) also becomes an excuse to gain as well, as older people tend to be heavier than younger ones, at least that's the way I feel. Take heart, don't be ashamed of your body, no matter skinny or obese.

Yes I have padded as well. I have gone out in public, but it has been a long time. I padded my butt, and belly, but down low just below the waist of my jeans. It felt pretty good. I think I looked maybe fifteen to twenty pounds heavier. I haven't padded in quite a while, mainly because I have gained weight and haven't felt the need to pad much anymore.

I have to agree, I like seeing my belly jiggle too. Usually in front of the mirror. I lift my t-shirt up, holding the sides so it "hooks" under my belly, then lift, causing my fat to lift and release. Quite fun!

I think I prefer standing. I like tight briefs and standing shows off the deep lines in my fat the briefs create. Though I like photos of bellies lying on thighs!

Very early for me as well. I didn't know about feederism etc. until much, much later in life.
I remember the first time seeing "Pigs be Pigs" (or something like that) I was so aroused I thought I would burst. There was another cartoon with a mouse, Porky the Pig and a wolf, at the end of the cartoon Porky and the Mouse are gorging themselves and getting really fat. I loved it too.

You must "tossing and turning" more. My wife and I are pretty hefty and our sheets generally stay on, though the fitted sheet on the mattress does tend to ride up and off the corners. Your sheets could also be too small for your mattress. Mattresses have gotten "thicker" in the last few years.

Do you mean the "sag" line, where your belly starts to sag down? I have to admire your avatar photo, great belly!

I had to stay in pretty good shape for the military reserves. When I got done in 2013, I started to let go and eat more. I used to try to keep my weight under two hundred pounds, then two hundred ten pounds, now I'm at two hundred eighteen, with a BMI of 31, so clinically obese. I gained the freshman fifteen and then some in college, but I lost a lot of weight after I graduated and kept most of it off until I got older.

I have to agree with some of the comments/advice. I have gained only around fifteen pounds. I have been a jogger for many years and still jog, even though I love gaining weight. I too have felt the difference in my fitness since gaining. I admire how much you gained and how fast, but I think you should see where your body weight ends up by backing off a bit.
I'm quite old, so my gain isn't out of the ordinary for me in my age group, in fact it is virtually expected. Given your youth, I would take a break and see where your body adjusts.