I need help and kind of freaking out about this I'm 21 Im really worried about a brain tumor I had these pressure in my head and face for 2 weeks &amp; a half. now they don't happen in the morning but more or less in the evening &amp; night, when I sleep makes it feel better or not feel it at all. sometimes even though it has progressively gotten better, the first time it was really bad, I get bad allergies sometimes so I'm thinking it could also just be sinus without congestion in the winter. But at my job just a few days ago I felt like I was going to pass out as well as tonight I felt pressure all by my temples,face 
 &amp; jaws sometimes it would be tension as well I need help &amp; need some advice btw I cant go to a doctor Right now due to my finical situation &amp; insurance right now thanks so much for reading this post and any help is greatly appreciated also I'm writing this on my phone so I apologize about my Grammer.