Hey guys, so long story short, I developed terrible terrible anxiety.

It all began last October when I got really badly sick, not sure exactly from what, could be personal stress, anxiety, stomach infection, university stress, coffee, not enough sleep etc.

Point is I got badly...badly sick. I was recently diagnosed with erosive gastritis. The fucked up thing is that I developed the following symptoms: Tense muscles; head, hands and feet. I easily get scared, loud noises make me jump (this has greatly reduced as my stomach got better) or anything sad on the news scares me, past thoughts scare me, my insecurities have become 10x more horrifying to me, I lost all interest in the things I love, I can't sit down still because when I do I get anxious and unable to control my thoughts. Everything scares me and I get stupid worried over really dumb things.

I'm not sure if I developed GAD, or is it my gastritis that's playing with my head? Or is it both? My anxiety has slightly improved as my stomach gets better, but I'm at a point now were my stomach although not healed yet, it's still got a long way to go. 

I'm trying to get to some therapists as we speak, but for the time being, what is causing these symptoms? I've never had such bad anxiety ever in my life? Can this all go away?