I have no idea what I am, help.

Hi I with such a problem. For about two years I have a malaise ie internal anxiety sometimes palpitations tightness in the chest soft legs makes me feel weak as if I was about to fall over and it becomes more frequent. More than two years ago I got pregnant everything was ok I felt great and before pregnancy and during but unfortunately I miscarried at 3 months ☹️ after half a year I got pregnant again from which I already have almost a one-year-old son and just from the second month of this pregnancy so I began to feel I was even a few times in the hospital all the book tests found that I am so pregnant but after birth it was already 11 months and I was already 11 months old and I was even a few times in the hospital all the book tests said that I was so pregnant but after birth it was already 11 months and I was already 11 months old and I was even a few times in the hospital with each month I have more and more frequent such conditions I studied at the cardiologist echo of the heart is ok I had a holter attached too nothing came out heart healthy and I do not know from what it happens to me. Maybe it's some nerves depression I have no idea help