HELLO FRIEND !!
Dont worry! you will surely become strong and healthy.
Just go for Ayurvedic treatment ,your problems will vanish.
first ur 
vomiting sensation and 
fever should be cured as ur complaints are from 1 yr it may take some time .
as fever & vomitting sensation vanish ur appetite increase.
Take  tb laghumalinivasant 2tbs twice a day with honey
         tb pravalpanchamruta 2tbs twice a day with honey
         tbl kamdudha 2tbs twice a day with honey
         bilvadi lehyam 1/4th tsf when u feel vomiting sensation
avoid fast food,junk food,colddrinks,cold water,spicy food
take these meds for 15 days ,follow up should be taken for any progress 
after that another meds for strong health & non recurrance!
if any query can contact at any time at drajit.2025@gmail.com
tc.
Wish YOU a Very Good Health!!
take these