How to maximize HMO before it expires?

I recently got laid off, so I won't be able to afford to renew my HMO anymore. My policy expires in a month, and this whole experience has been so humbling because I realize how naive and trusting I've been of the corporate world. Now, I just want to maximize whatever I have, however I can. Is there a possibility that I can maximize my HMO before it expires? I wanted to get some blood tests done, and I already contacted my agent, but I haven't heard back yet. So, what would you guys suggest?