okay so ive been on sertraline before but came off them as i didnt like taking them, however today i wanted to take them again as my anxiety is really bad, however tonight coming back from my boyfriends i saw what i thought was someone crossibg the road i didnt see a person it looked like a shadow however i ignored it, got home and whilst i was putting on a dvd i noticed something black scuttle across like a spider out of the corner of my eye, is this common? im so scared theres something wrong with my brain or im going insane! i dont think ill sleep tonight either im so scared