Hello,
If you have a cough and a headache , chances are there that it is due to sinus congestion. Sinus headaches are caused by sinus congestion and inflammation (called sinusitis). The sinuses are air-filled spaces lined with mucous membranes surrounding the forehead, cheeks and eyes. Healthy sinuses allow mucus to drain and air to circulate throughout the nasal passages. However it is important to rule out other causes of headaches as tension headache, migraines or neurological causes as well.
Consult a physician and get it evaluated. In the meanwhile inhale plenty of steam to get rid of any sinus congestion.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
I think it's my eyes, not a headache