You need to follow the account recovery procedure as laid out in a sticky on this board :
https://bitcointalk.org/index.php?topic=497545.0There is a big backlog of accounts, and I believe only theymos and Cyrus have the capability to recover hacked accounts as opposed to locked or forgotten password accounts. Read the instructions carefully, have patience and pray you can still prove your ownership of the account. You will have no problems if this is something you can do.
At the bottom left side of threads you have created you are able to move them yourself clicking something like "Move Thread" then selecting which board you would like your thread to appear in. That way you won't need to create a new thread next time and you can simply move it to the right place.