You might want to try calling a pharmacist, that's who I call when I can't get a hold of my doctor and need information regarding side effects, etc. I take 200mg seroquel and haven't experienced that but everyone reacts differently to meds. Generally about an hour or so after I take it I'm extremely exhausted and fall asleep very quickly, but that's a good thing for me because I was barely sleeping for awhile.
I don't think it was a mistake to report those symptoms to your doctor, it's important to tell them anything that's going on.
Sorry to hear what you're going through, it sounds scary. I hope you can get ahold of someone and get advice/help