Thank You very much guys for help...
Okay so i contacted with blockchain support....they ask my xpub code...so i send them and they resolve the problem...
Thanks and Cheers!....
That's goid to hear that they solved this problem $45k is really huge amount @mocacinno is right, a hardware wallet is a better place to store those funds. But if you don't want to buy that thing you can use desktop wallet, and I recommend electrum desktop wallet just make sure that your PC is fully secured with anti-virus.
And maybe you can lock this thread also as your problem was solved already. Thanks.