Any idea how this could happen?

[Hagridul]

I feel really depressed, disconnected, anxious, I've lost my appetite and have trouble eating food, feelings of impending doom, and I occasionally will get nausea though I have yet to throw up but have come pretty close on 3 separate occasions. My legs also feel tingly, almost numb. My heart is beating faster most of the time, like I am very nervous about something, and I am having trouble sleeping because my legs feel so weird.

[meldahouk]

These are symptoms of panic attacks. I have these every day and they get worse if you didn't discuss them with professionals.
Please attend to them before they get worse. You must be worried about something in your life which you didn't disclose.
Hope this helps