bro, what's your current standing weight now? the reason why your not gaining weight is ultimately because of your diet. its not all about calories. in your case, yes, your calories are high but the sources are all from meaningless calories. try to bump up the calories from quality protein and carbohydrates. not from cadbury chocolate bars or milo or even nestum. from my observation, your post-workout meal isnt even enough to make your thumb grow, man, given that you're an ectomorph summore. so, work on it and trust me you'll see results.