Considering that you mention that you think there's a link between built up stress and emotion to your anxiety/panic attacks, I'd suggest you try to manage the stress and emotions and see if that doesn't help some.

It would be interesting to see if there's a familial pattern to keeping stress/emotions all built up inside, thus the tendency for it to run in your family.

Hmm. Perhaps.
I have issues with stress, though. People stress me out a lot.

 So you have to find something that allows you to deal with and vent stress regularly so that it does not go into an overload. When I work with kids who have intense emotional expressions that sneak up on them and get out of control I work with them on recognizing the physical signals that the emotions are getting intense. Do you  feel when you are getting stressed? What is it about people that stress you? What kind of stress is it? Is it disappointment, or frustration or maybe fear/mistrust?
Really work on figuring out what it is that specifically stresses you and what shape that stress takes as in what emotion is actually being felt. Then when you have it qualified that way look at what situations generate those feelings and what they register as physically. Then you can work to avoid some situations and change the way to perceive them and how to recognize when your feelings are getting stressful.
Perhaps if you can reduce the stressers and interrupt the responses a bit you can help avoid the panic attack.
If you add to this, something that you do regularly which helps to destress you then you can do a lot to get these under control.

Thank you again, Maestro. :)
I know I'm about to have a panic attack about five minutes before it happens, when I start to feel kind of shaky and uncomfortable. They're triggered by different kinds of stress, so it really deprends on what's goign on. You know how when you're really close to someone, (as in emotionally) and you can feel it when they cry, or when they're hurt, or if something is bothering them? Well, I've always been a major empath, and when Rhiannon is in pain, or when she hurts herself, I know before she tells me, because I'll have a panic attack. (usually). So that's one cause. Sometimes it'll be because of something at school, or from fear, but their predominantly from emotions. The thing about people that stress me is their constant close-mindedness, and the way they'll hurt Rhiannon and me. :/

 Ok, so the primary stress is frustration with the ideas that people hold. So realize that many people will not listen to reason and that unfamiliarity breeds fear. So we have to educate and decrease unfamiliarity. Getting frustrated with them is just not going to accomplish anything.
I want you to consider that if you are responding to the pain of another by having a panic attack you really are not able to do anything to help that person. Try to look for way to channel that emotional energy that are productive and helpful.

Hmm.. okay. Any ideas on how to do that? :/ Channel emotional energy in a productive and helpful mannor, I mean?

 Do you have any hobbies, interest or pet projects? Is there anything that could become a hobby?  Are you interested in desktop activism from your computer which would help you feel like you are fighting phobia?

Desktop activism is an amazing idea... but my phone can't call that number. v.v  I don't have long distance. -_-' The second one, I can do, though.^_^ Thanks! 
(I totally just googled Desktop Activism, by the way.)

 So get started with activist work from your desktop computer. Read some LGBT news sites each day and write emails and comments. Send notes to politicians and police departments and anyone else that needs to hear you voice. Stay calm and speak truth to authority.

W00t! Amazing idea-ness.^_^ **BROFIST**
:D
...Jellyfishy!