Heaches

I am an eightteen year old feamale who has had suvere headaches all my life do to a shunt. and they were under control for a long time up to a few years a go. I have had a headache for about two years now and I also get spells every once in a blue moon where all my sences shot off and I will either lose something or it will make my headache worse or both. I have been told that they are migrines but to be honest I don't believe the doctors I have been seeing and I'm sick of being sick because nothing is helping me. I have not through up but I also haven't gotten any other sickness except for the common cold but that even doesn't last long and my headache will come back. I have good days and bad days. On my good days my headache is at a 3 maybe a 4 on my bad days it is between a 5 and a 10 depending on the day. I have also been told that it is stress but I have been pretty relaxed since I have gotten it. I have been told that you can grow out of throughing up if you have a shunt or that if the shunt is just slitily out of place I will feel it because of my headache but I won't be showing it because it is only just slitily. Is that true. Look forward to hearing from you. Brandi