I had 31" in October when I was 160 lbs.
I totally exploded and now with 202 lbs I have 43"...

Wow man, you're in haven

I think that you crossed the line where there is no way to go back. You're too fat to start dieting and exercising.
Enjoy the food and being lazy you're looking exceptional with new fat

The most I've ever eaten is 10 cheeseburgers and two large fries. I almost pop after that... Needed to rest for couple of minutes to even stand up and go home.
I was sitting with my belly resting outside of my pants.

35% and 45 inches

It's definitely your gens and you are pear shape.
But don't worry if you will eat a lot of fattening, sweet and junk food, the belly will definitely start to grow because such food likes the belly

I know what you mean. Once when I wanted to gain weight I started to eat like crazy. Really, I eat everything what I wanted and even more. It was so easy to spoil myself because everywhere I go, the was a lot of yoummy food like sweets, burgers, crisps, ice creams etc. But after 3 weeks weight not changed so I started to even push myself to eat few snack bars and drink creme. But for next 3 weeks there was nothing, only something like 1kg.
But after without eating more, maybe a little less, I started to blow up. I ballooned 10 kg in one month. After that I slowed it down and not gained more than next 2kg, but gaining is strange sometimes. So keep eating and you will definitely gain a lot of weight