Unsure of what to do? Could this be GAD?

Hello everyone!

I'm an 18 year old female who has a history of Social Anxiety, to give some background. Lately I have been feeling horrible and I am at a point where I'm not sure what to do and I'm just wondering if I can possibly get some advice.

I worry about about everything. My health is my number one worry and I seriously cannot go a day without worrying about my health and if someone really bad is wrong with me. I make the mistake of going onto the internet and I leave the computer feeling worse than before I got on the computer. My stomach frequently churns and turns because of my constant worrying and I find myself using the bathroom quite often when I feel this way. A day does not go by that I am not trying to figure out what is wrong with me, if something really is wrong. This has been going on for years.

Lately (within the past few days/week) I have been having a lot of pains. Chest pains are my most recent issue. I really don't feel the pain until..I start worrying, go figure. I'm fine when I wake up but as soon as my day goes on, it starts. It was really bad a few days ago and I assumed it was heartburn so I took medicine for it. I don't have any trouble falling asleep, but lately I have been waking up and soon after waking up I start trembling, my stomach feels weird and I just get extremely anxious and I end up having to use the bathroom. I suffer from migraines so I usually don't associate them when anxiety but I'm not sure. I find it hard to concentrate and I'm irritable a lot. I'm also cold more than I'm ever warm/comfortable, not sure if this means anything but it's been going on for years as well.

The only peace I really seem to get is when I'm active and sleeping. When I'm not doing anything and my mind has time to wander is when I can't focus and think about anything else.

I've talked to my doctor about stress and anxiety in December and he basically just told me to try working on ways to relax (meditation, yoga, etc) and if it continues to come back. I'm at the point where I'm not sure what to do because it seems like everyday it gets worse and there's something new that I'm worrying about it and physically/mentally I'm exhausted. I feel like this is taking a toll on my health and daily functions.

I'm not looking for a diagnosis, just any advice is greatly appreciated!