?no admin or login?

I have several wordpress blogs. I had to change themes quite a few times on all of them because they vary so much, one will not have one important feature, another won’t have something else and so on. Well, now I have a theme (cute-critters-10) that I like on this particular blog I have. I noticed from the time I installed it that it had no place to login, nothing that said login or admin. I figured out a work-around that works on another theme I have, to log in by going to an “edit” on a post. There was only one of those and it was on the “about” page. After I wrote my “about” and posted it, now even that “edit” is GONE! So, now I can’t even get in to the admin that way. Now I can’t post or do anything at all on this blog. I am totally lost and frustrated.
HELP? ANYONE?