when I opened today I received a stake and I closed the wallet and bought some at the exchange  and withdraw  the coins  at the exchange to my wallet, but when I opened my wallet it wont synchronize it just saying "catching up... Downloaded 9265 of 9713 blocks of transaction history (95.39% done)  last receive block was generated 5 hours ago..

IM still waiting for the coins from the exchange to my wallet
IM scared if I dowloaded a new file wallet my coins and my wallet and the one that is coming  it will be lost.

can someone please help me? Im very new to to this stuff.
thanks in advance..