Before i have a good body i am 90 lbs... and now i reduce weight 87 lbs.. i want my weight back. pls help me..?

in the philippines my weight is 90 lbs or 91lbs a couple of months i reduce weight bec i did not eat much in breakfast and lunch,, bec as i observe here in usa u eat only once like dinner.. but in the philippines we cannot do not.. thats why i lost my weight,, i want to gain weight.. and now i have an hyper acidity i keep on taking pep to bismol.. does anybody can help me what i can do.i have no job right now i am depend on my husband he is an american,.can u advice me how to be fat, and not be hungry/.