PROZAC AND HEAD ACHES?

ive been taking prozac for almost 3 weeks. i was put on this for anxiety. i got started off with 10mg for 2 weeks i noticed a small improvement with anxiety. got some tension head aches because i also stop taking lorazepam. i was only taking .5mg and not often tho. it kinda makes me dizzy like a slight drunk feeling. then he had me take the whole pill 20mg 4 days ago. it didnt do anything but on friday i felt slighty dizzy kinda more then before. and last night i got a head ache at the top of my head at the back it goes to the front. its somewhat similiar to a tension head ache but hurts a lil more.i mostly feel it in the back of my head and my nose for some reason. besides a lil diahhrea, like barely. ive been feeling dizzy and kind of getting the aora like sometimes when i close my eyes i see stuff. but i had that before with the anxiety. and i noticed my reflects are more responsive. no fever. a lil flem in my bronchiolar tube nothing bad. wondering what would cause you to have this and a head ache for almost 24 hours. sometimes i wont notice my head ache for 5 minutes. could this be allergies serotonin symdrom anxiety the prozac or sumthing else. im 19 a heavier kid. help me out