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Please note that if the sole reason you want to get a divorce from your wife is because the both of you have been unable to conceive, then that is not legal grounds to be able to file for divorce immediately. You will probably have to separate from your wife first for at least 2 years before filing for divorce based on the separation. You can read more about the grounds for divorce here – https://lawpadi.com/grounds-for-divorce-in-nigeria/
We hope you have found this information helpful. Please note that this information is provided for general informational purposes only and is not intended to be legal advice. No lawyer-client relationship is formed nor should any such relationship be implied. It is not intended to substitute for the advice of a qualified lawyer. If you require legal advice, please consult with a qualified lawyer.