Brief Answer:
you can take triptans; visit a neurologist

Detailed Answer:
Hello

My name is Dr Muhammad Ali Rauf & i will look into your problem.

I have gone through your query and would try to help you in the best possible way. There are two kinds of treatment for it; immediate & preventive. I usually start my patients with sumatriptan at an initial dose of 25 mg for pain relief. In addition, preventive medication can also be started to reduce the frequency(if headache occurs often). Options include propanolol & amitriptyline. Most of these drugs are prescription drugs so you need to visit hospital to get them. As your condition is sever so i would suggest you to get an appointment with a neurologist for prescription of specific medicines for migraine(as mentioned above).
Following general care will also help you to reduce the severity of symptoms:


General Measures:

1. Diet:
Following food aggravates symptoms:
> Alcohol
> Caffeine overuse
> Chocolates
> Citrus Food & banana
> Dairy cheese
> Vinegar

2. Stress:
Stress is a potent stimulator of headache. If you have past history of stress related issues then you need to visit hospital to get medication for it as they are prescription only.

3. Exercise:
Try to have a walk in the evening for 30-45 mins. Change in environment will help to reduce stress & improve health.

4. Sleep:
Adequate sleep is very important. Sleep deprivation is a potent stimulator of headache. You need to manage adequate sleep of at least 5-7 hrs/day.

5. Light:
Flashing lights like in clubs also stimulates the headache so you need to avoid them.

6. Keep a Headache Diary:
It can help you keeping the record of triggers. Write down everything you eat and drink, your exercise routine and schedule, the weather, strong feelings and emotions you may be having, your medications and their effects, and times and severity of your headaches. This can help you see a pattern in your migraine occurrences, and will make avoiding one easier.

7. Hormonal Changes:
Particularly important for females as it may aggravate the headache, specially oral contraceptive pills.

8. Weather may also effect:
Humidity and hot temperatures can stimulate headaches, as can rainy days, so it’s important to be aware of your environment.

Hope I have answered your query. If you have any further questions I will be happy to help if not then don't forget to close the discussion and rate it.
Wishing you good health !!

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