IMPORTANT ( to all who read this) : make sure you are on the latest wallet version, v.3.9.16. There is a fork still going on, and lots of bad mess in last two days.
It is worth also to check time to time, that you are on a valid chain ( not forked). Do this in console, with command < getblockchaininfo >, and compare your last block data to the last from the block explorer
Good luck and enjoy hodling #block - probably the most valuable coin in 2018