This is a serious matter of consideration. Your cat needs to vomit hairball out. Licking coat frequently by your cat has caused this problem. It should be taken care at once. Otherwise, your cat will have to under go the process of surgery to get that hairball out. Get its digestive track scan to know if number of hairballs is more than one. Try to make your cat vomit.

 Sounds like a hairball. Get it some cat grass for stomach troubles. Www.kittiescity.com has cat grass for sale but you'll have to wait for it to grow.