Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with a doctor.
Without the ability to examine and obtain a history, I can not tell you what the exact cause of the symptoms is. However I will try to provide you with some useful information.
Seizures can occur as a result of a migraine. However, seizures are typically an usual manifestation of a “benign” migraine. Other causes of headache will need to rule out. These include bleeds, aneurysms, tumors, etc.
I’m sorry that you do not trust the medical profession. However, you should be evaluated by a neurologist. You will need to have an MRI of your brain with and without contrast as well as an EEG. Additionally, you should observe seizure precautions including no driving until cleared by a physician.
Thank you for this opportunity to answer your questions, I hope you find the information I have provided useful, good luck.