What am i suffering from?

ok so im 17 and for the past cyear ive had bad feelings that i can only descrie as anxiety. there is no specific reason for me to be anxious and i keep getting these anxious feelings that are uncomfortable. they are extremely hard to describe but there is no reason for me to have them. im not reacting to any thoughts and i keep getting this anxious feeling. there is absolutely no reason for me to have it. like i cant act one way to relive the anxiety because i always feel anxious and when i feel good i usually get these what if feelings of anxiety coming back. im not thinking anything consciously and i also think i have social anxiety that is hard to control aswell. what is this anxiety for no particular reason and why i it bothering me