Pain induced Seizures....

Hi all,
just wondering if anyone else out there has experienced pain induced seizures resulting in a full grand mal seizure. I've done all the testing out there.... been told its in my head, and its anxiety.... my seizures started at 5 years old and continued throughout my life. (24years old at the moment) during my testing they have tried to trigger epileptic seizures with no luck but have narrowed it down by a cardiologist to be my heart. as the pain causes shock in my body that then the drop in my blood pressure stops/slows my heart which no longer sends blood to my brain creating the Grand mal seizure trying to bring oxygen up to my brain… the best test I have had to prove this is a tilt table test, as they stick you with a needle first which then triggered my seizure as the table was being raised to a 90 degree angle… once doctors had my heart flat lining and coming back on screen (and not just stories myself or others had told them)… they could finally do something about it! I’ve been on medication and seizure free for 2 years…. A pace maker later in life maybe an option but because of my age they are not wanting to do anything to drastic just yet! I'm determind to avoid the pace maker, is there any one that has similar problems to this? how are they being handled for you??
All the best
Melissa .