Need help
I am 15yo about 2 weeks ago i had a terrible headache and i was throwing up and having a panic attack my mother was extremely worried and contacted a doctor. She told me she was gonna schedule an MRI i didn't know what that was so i searched it up and freaked myself out, about time for the appointment the doctor told me he didn't think anything was wrong with me and he said the MRI was optional and he thought the headaches were anxiety (haven't had a headache since) but the MRI was scheduled for august 21st and now ever since that day of the appointment i've been having terrible anxiety issues yesterday i cried 4 times my heart keep beating extremely fast i was unable to eat, I wake up with my heart beating very fast and I am unable to make myself relax my mother even said she would cancel the MRI and i thought that would calm things down but no my body is still in this fight or flight mode i just need to know i'm not in this alone i've did some research looks like heart palpations and just anxiety if someone could give me some advice/information i'd really appreciate it.