Welcome to the forum. It is great to have you as a member. This is a wonderful place to get advice and support from people going through similar situations. The members here are very helpful. It is nice to know we are not alone.
I am sorry to hear you are going through such a rough time. Anxiety and the fears that go along with it can be very debilitating and limit things so much. I have found though that facing the fears and pushing myself out of my comfort zone helps so much with the anxiety and let's me still do many of the things I like to and need to do. As for the antibiotics, if you have already taken them for 6 days you need to finish out the 10 days. Also if you have taken for 6 days you should be fine taking the rest. The pain in your chest could be either gas, acid reflux, or just plain anxiety. Many people here have the chest pains on a regular basis (myself included). I hope you feel better soon and are able to get those teeth out. This site has helped me so much in finding people who I can talk to and who understand what I cope with everyday. I hope you can find that support and help here as well.
Feel free to explore the forum. There are lots of useful topics to read. Feel free to post and ask questions. If you have specific concerns or questions start a topic in the appropriate section to get the best feedback. There is also a chat room for members 18 years and older that you can access once you have made three meaningful posts in the forum.
Again welcome to our community.