Anxiety sucks, HELP!!!!!

Hello, I'm asking, if anybody knows a good Dr. to see to see if I have anxiety? Ever since my son joined the Military, my anxiety has been at an all time high!! (I've had it before, went to cardiologist for chest pains & was prescribed nitroglycerin, i don't feel like it works though) & I've never went to a Dr before to see about having anxiety and would like to now, to see if this ugly feeling I'm always having along with chest pains is caused by anxiety. If any of you have been diagnosed with anxiety could you please tell me how you felt and what made you go to the Dr to get diagnosed? Also like do they run tests on you or what? Thank you so much in advance!! I just need help and don't know what steps to take or dr to go to! I just know that when this feeling comes I don't feel like myself, I wanna shut down, & I just wanna lay down and cry cause I don't feel normal.