According to your description, it may be caused by taking diet pills. I suggest you stop taking medicine and rest for a few days. If the symptoms are relieved and you want to lose weight, consult a doctor in time.
Obesity is not only an aesthetic problem, but also a chronic disease. People who really need to lose weight should go to the weight-loss clinic of a big hospital for medical treatment.
At present, some people who should lose weight don't. On the contrary, some people who should not lose weight blindly use slimming products, which is very dangerous and sometimes brings unexpected side effects. So, if you want to lose weight, you'd better consult a doctor first to see if it is necessary to lose weight and how to lose weight.