Think I put too much pressure on a girl, what to do now?

Things were going well but then it she started backing away. I tried talking to her about things but did she didn't really seem like she wanted to talk...short, incomplete answers. I told her I'd give her space and haven't spoken to her for 3 weeks. I'd like to eventually try again, but I'm at the point where I'm not sure to wait for her to contact me or for me to contact her with something simple in another few weeks.
Think I put too much pressure on a girl, what to do now?
Post Opinion