Diagnosed Anxiety

I was diagnosed with anxiety, I have to take medication for my attacks. Anxiety is something I don't remember ever having, I only discovered my anxiety a year or so ago, after a big fight happened between my dad and his friend, I started breathing heavily, my heart was racing, it felt like I could breathe, my body was having an attack from the stress, because of my anxiety, I don't socialize with very many people in real life. I get very uncomfortable around large crowds of people or being around people I don't know. I will not go into a friends house, I can't, otherwise my anxiety acts up.