Girls, hello everyone. Can you tell me what they were treating for, wh…

Girls, hello everyone. Can you tell me what they were treating for, what they did, pregnancy is 4 weeks, I'm only booked with the doctor on Thursday, I'm sick now with sore throat, terrible runny nose, my head hurts. I got it from the baby, I'm very worried, who was sick at such an early stage? And how should I act until 12 weeks not to take my son to kindergarten? He gets sick every 1-2 there.