Yes it may be because of these reasons but there are many other reasons too

hi.. headache with neck pain could mean migraine , sinusitis or sometimes even increased blood pressure. migraine is usually accompanied with vomiting or nausea and is usually one sided around the eye and is usually triggered by certain triggers. High blood pressure could also cause headache along with symptoms like blurring of vision, epigastric pain, hand and feet swelling. Would therefore advise u to visit a neurologist who will thoroughly examine u and rule out any underlying conditions.