I am 19 years old,height 5ft 3 inch.I everyday vomit in morning after wake up from bed during brushing and washing my face,when I wake up I feel vomiting tendency,after when I start to brush I start to vomit,It is from my childhood,but it was then irregular,It would be then 1-2 days in a week,but now it has been made regular.-what is the cause for it?