I think for you, your depression and anxiety were hand in hand. It can be the same for others. For me, my anxiety and depression are relatively separate. Now everyone is different but the thing I've noticed with almost everyone, is that their mental health affects their physical health and the way the body reacts to certain things. Relatively true again for me. With my anxiety, I'd have night terrors and panic attacks. My depression saw me in bed for hours at time sometimes whole days. If I'm stressed and not coping well, I have migraines that make it literal hell on earth for me. It sounds like you're body was doing the same. Your mental health wasn't the best and your body was reacting in a way it thought was best. And as your mental health improved, so did the way your body working. Psychosomatic. Learned that freshman year of highschool. It's the body physically reacting to the mental condition of the person. I went off on a ramble 😅 but I hope it explains something!

My anxiety just cause me physically symptoms all the time. Chest pain shortness of breath, fatigue, dizziness, weak legs etcc.. anyone else has same issues??

To you have physical symptoms too. With me I don't feel anxious but constantly have physical symptoms I can go all day naming them. It's all gad related iv been told by doctors