I'm sorry to hear about your experiences. Pounding / throbbing is a symptom of migraines. It is a symptom I suffer from. It is unfortunate your doctors scared you with aneurysms and such without checking for a migraine first. The good thing about migraines is that their not fatal, just painful and there is pain relief.
Keep in touch. If you start to get more headaches, then it would be time to start a pain management plan with your doctor. There are lots of resources on this website about headaches. Sometimes just reading about them and knowing more helps.