Tinkerell.
Sorry to be blunt but your latest update shows you have little idea about food and nutrition. There is no such thing as carb intolerance- just overeating carbs!
Pepsi is rubbish. Even zero cals.
You are eating a lot of processed food including meat which is related to higher bowel cancer- pies, sausage, faggots.
This is my typical day of food.
Breakfast at 7,30am 1 boiled egg and 1 slice toast. Or 1 small bowl of porridge with 1/2 teaspoon honey and some blueberries.
Lunch Either half a pot of some kind of vegetable soup (often home made) and an apple, sometimes a small portion (150mls) of full fat greek yogurt. Or, it might be a salad I've made with tuna, prawns, egg, cold meat, watercress, peppers, celery, grated carrot etc.
Dinner- varies of course but most often , a fillet of fish (cod, salmon, haddock) oven baked, with masses of steamed veg, sometimes roast veg, sometimes fish pie, sometimes a homemade casserole (chicken) , sometimes a roast (at weekends), desert is always a piece of fruit and Greek yoghurt.
I eat 3 good meals a day and i weigh under 8 st (I'm petite.)
We don't eat pastry (as in pies), pizza, pasta, white rice. They are all refined carbs. Some people might think this is extreme, and yes, we have the odd treat, but these foods aren't on our plate every day or even every week.
I think it would be a good idea to post a photo of your typical meal in the evening as it's likely you are having something like 3000+ cals (more than a man needs) .
You are not active by being at college all day- assume that is sitting at a desk or moving between floors at most.