Doesn't the copyright automatically belong to you anyway? |
|
Yes. There's no need to do anything: your words belong to you as soon as you put them on the page.
If you want to prove that your words are yours, there are various ways - starting with depositing a sealed envelope at the bank and getting a receipt for it, or emailing it to yourself or to a friend, so that the email is dated. Or you could uploading the files to a website or online Cloud storage such as dropbox.
Some agents put likely response times on their websites, but three months isn't uncommon at all.
It's agony, waiting - the only cure, or at least palliative, is to get on with writing the next thing.
<Added>You can get a free, downloadable guide to Copyright, written by the Society of Authors, here, along with guides to all sorts of other important things:
http://www.societyofauthors.org/guides-and-articles