Girls, please tell me how to get rid of a cold at 20 weeks of pregnanc…

Girls, please tell me how to get rid of a cold at 20 weeks of pregnancy. A slight cough is already wet and hurts the body. Temperature 36.6-37.0, the nose is stuffed since 5 weeks of pregnancy (rhinitis). I have tried folk remedies - honey, oil and milk, cranberry... It didn't help ? Doctors say it's due to low blood volume ?