If you have a bankruptcy attorney (which you should in chapter 13) this is a question that should be posed to him or her. There are some complex implications in conversion from chapter to chapter, and it's not something that should be undertaken without careful consideration and legal advice in view of the full facts.
Given the right facts, it is possible for a modification to bring a mortgage current and then keep the house through chapter 7. I cannot say if that is your situation or not.
I'm a <a href="http://www.eastwakebankruptcy.com">North Carolina bankruptcy attorney</a>, licensed to practice law in NC only and concentrating in the areas of bankruptcy and consumer debt law. This post does not create an attorney-client relationship, and is for general information only.
To answer your question ... if the only reason you were in a Ch13 was to catch up on arrears and save your house, and you otherwise qualify for Ch7, then, yes, you should explore converting to Ch7 a.s.a.p.
Based on the information provided there is no way to answer your question. We don't know if you are an above median income debtor or below median. I hope you have an attorney, and if you do, contact him or her. If you don't you may want to have one assist you from here on out. There are a number of in attorneys in Charlotte who participate on this forum as well as many who do not. Try going to the attorney finding tool at www.nacba.org.
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I agree with Mr. Fabricius and Mr. Caldwell, there isn't enough information to give you an accurate answer. You should consult your attorney. If you filed pro se this may be difficult. The simple answer is yes, you can possibly convert. The problem is that we don't know if you even qualify for a Chapter 7, or if you have any property which has equity, possibly including your home which would be lost in a Chapter 7. You need to consult your attorney or an attorney to discuss conversion.