Migraines

I have a patient, 20 years old, with chronic migraines for 10+ years.  She often has a dull, heavy headache, but 1 or twice a week, she will get a throbbing, painful migraine that is usually helped by heavy duty migraine medications like Imitrex.  Her dull headaches are usually around the eyes, while the migraines can also wrap around the temples and the back of the head.  She also experiences nausea and sometimes vomiting when a really bad migraine occurs.  She has some sinus allergies, and almost always has post nasal drop.  She catches colds quite frequently.  In addition, she has some anxiety and depression.  Her pulse is wiry and slippery.  Her tongue has a slightly purple body with a stomach crack in the middle and a white coat.

I have diagnosed her with LV Qi Stagnation, Blood Stasis, and SP Qi Def with Damp Phlegm.  I have used a combination of the following points: GB14 (during headaches), Tai Yang (during headaches), Yin Tang, LI4, CV12, CV6, ST36, SP6, GB34, SP9, ST40, LV3, ST44 (during front headaches), GB20.  I generally use about 12 to 14 points total per session. I have also advised her to cut cheese and processed foods as much as possible, as she often eats frozen pizza and macaroni and cheese from the box.  Additionally, I have advised her to do deep abdominal breathing to help with relaxation.

I feel that I have approached this case using a very direct technique, drawing from my training in TCM.  However, I am not getting the results that I expected.  Although I've only seen her 5 times, her symptoms have not improved.  In fact, at times, they seem to have worsened.  Her headaches are coming on more frequently, and she has had a few very major migraines during the weeks I've been treating her.  Also, once after she received treatment from me, she went home and experienced a throbbing headache and subsequently had to lie down and take medication.

Am I missing something here?? Suggestions/insights would be greatly appreciated.  Thank you.