Part of the answer to your question depends upon the symptoms you suffered as a result of your stroke, particularly with reference to what you have now; the remainder of the answer will come from a formal examination by a Neurologist probably with the aid of a test such as EMG or MRI of the neck.
Nerve compression results in pain and a pattern of loss of strength and sensation typical for the site of compression. Coughing and sneezing can aggrevate this pain. The initial approach for nerve compression is usually conservative (anti-inflammatory medication, a soft collar, etc.); under certain circumstances surgical intervention becomes necessary.
The first step for you is to see a Neurologist, who can use your medical history in conjuction with the examination to determine the likeliest cause for your symptoms.