Should i text my 'gf' to ask where we stand?

She suddenly stopeed talking to me like a week ago. We are in sort of a ldr. Anyways, I texed her a week ago to ask her what's up and she only gave me a one word answer. I mean if its over, at least I deserve to know right. I don't want to come across as a pest by constantly constantly contacting her. If its over I can deal with it. I know she's young. She's 18 , I'm 22. Any advice?