I went to USA August 2014 by F1 Visa. But due to some family emergency i have to come back Bangladesh on October 2014. For this I apply to my college for withdrawal. So they Withdrawal. After that i came back to my country. Now i want to go back to USA to continue my study. I have mailed my college. They replied me that i have i have submit new application then they will provide me new I20. As i am out of USA longer than 5 months do I need another visa. As i have another four year visa.My visa will expired on 2019.