I think i have a a air bubble lodged in my brain how can i diagnose that will a mra show it?

i think i ahve it for 4 months and i havent had a stroke yet or died can my life be in jeopardy ffrom this and is there a way they can release the air bubble from my brain is there treatment for this im having harrible headaches and nothing else just servee headaches and my head feels balloned inside i can feel this air bubble!!!!!!!!!!!!!!!!!!!!!!!!! ok thanks!