for quite a lot of my life i would have wierd patterns enter the corner of my vision (you know ive you close ur eyes and press against them, sorta like that.) recently they have been happening more often and more detailed. for example today while walking in the forest next to my house i saw a blurry figure doing a walking movement then the next moment i see its just a tree stump. also while walking alone i heard this wierd squealing noise that didnt sound like any animal i know. Am i going insane?