I'm sorry that you are struggling so much right now! Anxiety, stress, and putting extreme pressure on ourselves can definitely make the binge/purge cycle much worse. Essentially, it is our way of trying to control all the chaos in our lives!
Short term, I would maybe practice some breathing techniques to help reduce the stress and anxiety. I would suggest giving yourself some time of rest, even if just for a couple of hours so you can refocus and let some of the anxiety go. Nature is a great place to be to reduce stress and anxiety!
Long term, however, you should seek help. Often times, bulimics, are within their normal weight, but it doesn't mean you are healthy. Bulimia is a mental illness per se and needs to be treated as such. I would definitely talk to your doctor and start seeing a therapist. This will not go away on it's own. You have to understand what's driving the behavior and gain new tools to help you deal with your negative feelings, anxiety, stress, etc. Don't be ashamed to reach out to family and friends. I know that it is scary to do that, but you do need their help and support in the recovery journey! it is nothing to be embarrassed about. You don't need to hide it or walk this journey alone. Once it is out in the open, you can be more accountable, and the guilt and shame won't have such a hold over you anymore! I know how hard and scary being in this cycle is. I have been there many times, but am on the road to recovery. Therapy and support has been the most essential thing in my recovery process. Wishing you the best!