Help me for weight raise.

As my weight is 45 kg in height 160 cm, eating good, but I cannot weight to raise, maybe its happening that my stomach prolapse.
As moder life,stress, meal character as snacks with fast food, caffeine a few cups with sugar, eating in snack bars,that meaning as you are eating good, but this is happening till your stomach problems , weight. In bad meal organism needing in vitamins and minerals, use complexes of vitamins as B,C,E, ZN. Protein forms muscle mass, where forming hormones and ferments, regulating metabolism, as protein quantity calculate by own,as for normal organism work need one gr of protein for one kg a needing mass body, as in you is 50 kg, you needing in 5 kg additionally weight, thus everyday eat 120 gr of meat, as chicken, turkey, or fish,sea meal, if allergy not affects, and curd 200 gr, eggs, cheese, nuts, limiting flour, sweets, if within a day you are often snacking with sweets,thus a healthy meal you will not want eat.

Milk, sour mil as drink within a day on 4 glasses milk, or sour milk, are sugar free, canned,artificial without, they are absorbing better, immunity strengthening, improving micro flora, as for snack as for second breakfast and after non snack drink yogurt glass with berries or fruits.