Good day, pregnancy is 7-8 weeks old. Three children, the last two pr…

Good day, pregnancy is 7-8 weeks old. Three children, the last two pregnancies ended in non-viable pregnancy and miscarriage. I am very worried about this one, I had an ultrasound, there's an embryo and it's visible pulsation of heartbeat. The last week weakness, nausea. Today the temperature is 37.3 and runny nose. I have only been taking vitamin C, I am worried about the baby's condition, how can I be treated so as not to harm the pregnancy? Can the fever be a consequence of toxemia?