What's wrong with me? Is it a mental or physical problem?!

What's wrong with me? Is it a mental or physical problem?

Sometimes, more frequently now, I start almost panicing and getting extremely nervous. I feel like when your on a roller-coaster and your stomach drops. I used to only feel like that once in a while, but lately, for the past month, I've been feeling like it everyday, particularly at night-time. It's a nervous feeling, sort of like before your first day at a new school or a new job, but there's nothing to be nervous about, but I constantly feel like someone is gonna find out some secret about me, or that someone is talking behind my back. It happens at least twice a day, ususally more, and the feeling lasts for anywhere between 10-30 minutes. I get extrememly depressed and feel like killing myself when I reach the lowest point of the feeling, but then after a little bit more time, it goes away and I'm back to normal. It's very dabilitating and happens at random times, like shopping with friends. What's wrong, and how can I fix it?

You may have generalized anxiety disorder with panic attacks and some signs of paranoia. First, ask yourself. And be honest. Do you do any illicit drugs, or any mind altering drugs? Have you ever. Did they cause this ? If not. Then forgive me for asking. Eliminating that possibility, you must seek a psych. ASAP since the symptoms are esculating. You dont want to live with this crap, there are meds out there to help you. If nothing else. try to sleep more on a schedule. Also get more exercize. You will be surprised. Try it.