I filed a lien back in July and my time is coming up to enforce my lien. I’m afraid that if I don’t enforce my lien that I won’t ever get paid for the job I worked on and the materials that I paid for.
You're right to be a little worried if you haven't been paid yet. You should file the lawsuit to keep your lien rights in effect (they'll expire otherwise) and think about including a claim for beach of contract too.