Hi , Thanks for your question I can understand your concern. Astgmatism can cause headache but it will also have symptoms of blurring .If you have already consulted your physician I will recommend you to visit an Ophthalmologist for further evaluation . Now headache in this age group should be evaluated thoroughly . Once you are rule out with ophthalmologist then have to rule out other causes of headache.Furthermore I will say here few things, Migraine is one of them and it is quiet common when mother also have same problem. Next headache duration , associated symptoms like nausea and vomiting or twinkling of stars preceded by complains of headache. Also, frequent history of common cold leading to sinusitis can give headache which will have feature as pain increasing on bending head down and is of pulsating in nature. So once you are done with your Ophthalmologist you should consult a Neurologist also . Thanks