kammi,
Thanks for getting in touch and sorry to hear you’re having trouble here, but hopefully I can help. It appears that you need to allocate more memory to WordPress in order resolve this issue. Take a look at this codex article, which will show you how to increase the memory allocated to PHP/WordPress on your site.
If that still doesn’t resolve the issue, then I would recommend reaching out to your hosting provider and seeing if they can help you to increase the memory allocated to PHP on your install.
Just let me know if you have further questions. Thanks! ๐
-Casey-