brain tumor? PLEASE READ

hi, i’m 15 years old. i have this tendency to overthink a LOT. but anyways, recently i was put on a birth control shot called depo, and a few days after that, was when all my symptoms started. i started to have difficulty remembering if something actually happened or if it was a dream. i get these deja vu like moments more than once a day. it’s so hard to explain but, i was pulling a piece of my friends hair out of a makeup brush (bevause she sheds alot and her hair gets everywhere) and while i was doing that, it triggered a memory that i don’t know why i had and i don’t ever remember thinking, unless i had a dream about it but i have no idea, but the memory was me in the shower pulling a piece of hair off the shower wall and in the memory i was questioning why the hair was black bevause in the memory for some reason, i thought she had dyed her hair red. but in real life, she didn’t. so it freaked me out bevause i don’t know if that “memory” of me in the shower was a dream or if i had made it up somehow? i don’t know. lately i’ve been having somewhat short term memory loss and i’ve had a lot of anxiety. but i’ve had anxiety from the first time i realized i was getting my dreams mixed up with reality. it’s been very hard to concentrate lately. i’ve been having severe anxiety. and right now i fear that i have a brain tumor. no, i have not been having seizures or headaches. but i’m just really scared about the whole memory thing and the dreaming crap. i feel like time is going by so fast. and i really want to go get an MRI but i don’t know if i’m just over reacting? my eye has been twitching a lot over the past few days and sometimes for a split second i’ll see something that’s not there. what do you guys think? do you think it’s just the depo shot or if i actually need to go to the doctor? brain tumors don’t run in my family but anything bad can happen. i’m just super stressed and scared. it made me think i might have a brain tumor because i guy who experienced the same “deja vu” moments found out he had a brain tumor. he also had seizures but, im not a doctor and i just feel super in the dark and stressed. i don’t know what to do.