What could be the cause for my headache after delivery?

Hello doctor,

I am a 29 year old married female. I delivered my baby a year ago. I had post-spinal headache for three days in the hospital. Again, for the last eight months, I have been suffering with severe upper shoulder pain, neck pain and one-sided headache. It started with severe giddiness and nausea. I have consulted many neuro physicians and they prescribed me medicines for migraine along with antidepressants. But, I did not get any relief. A neurosurgeon told me to take Dolo for three weeks and Stalopam 10 mg. That too, did not help me. I got my MRI scan done and was diagnosed to have a small cyst (subependymoma) in my head, which doctors said as non-cancerous and not related to these headaches. I lifted heavy weights in my fourth month after my delivery and I had upper shoulder pain. Later, my neck and head pain started. I guess, pain in my upper shoulder muscle leads to neck pain and headache. Doctors say it as a migraine, but I am not sensitive to light. I started taking Vasograin since five days and feeling good for about 80 percent. Please help to come out of this terrible headache and muscle pain.

Thank you doctor,

I would continue the medicines. Please explain the dosage and timing of medicine. To be frank, I met many neuro physicians. But, I did not follow the medication as I am scared of side effects. Now, I would strictly follow.