Hi I Am A 20 Year Old Female Who Is

Hi I am a 20 year old female who is slightly overweight. For the past month I have been experiencing leg and arm pain as well as having episodes of "heart attack like" symptoms. It happens almost every evening and sometimes during the day. I have this false alarm attacks and do deep breathing then they go away. I am on a journey to getting healthier and to start that off I have started water and juice fasting/cleansing. I eat nothing but drink water and homemade green juice. I have a doctors appointment on the 10th but I would like to have some idea of how I can make these attacks stop because they are affecting my sleep. Thanks.