"Dismissed easily"

Every time I come into the doctors, I have my medication reduced, told I need to quit smoking, I need to have a healthy diet. When I explain my eating habits and that I went 2 years eating one meal a day, it's shrugged off. Yes I'm over weight, I have IBS which is triggered by natural sugars, again shrugged off. My anxiety and depression is still bad but I feel like I'm being forced to come off medication too early. I came in regarding my heart palpitations and how they happen at night, to have an ecg in the morning to be told "your ecg is fine" and im not going to get any further help with this. When I ask for help, being told every time I visit that I just need a healthy diet and need to stop smoking is not helping. It's making me more depressed. I am making an effort but not ever taken seriously. I don't know how I'm supposed to help myself with my issues when the help I try and get leaves me dark even more! I've been put on heart medication I'm not supposed to have because of my asthma and noone is changing it to one that won't affect it, my anti depressants are being reduced when I'm still extremely depressed and anxious and my heart palpitations aren't being taken seriously due to them now showing up on one ECG. I struggle finding the motivation to come to the doctors simply because I'm always worse off after attending.