My poor son

Jessica • My name is Jessica. I am married. We have a 9year old son and a daughter who is 2!
My six year old hasn't been feeling well so he has been home all week. I took him to the doctors day and he has pneumonia I am scared because I am 10 weeks pregnant and his doctor says he is contagious. I am the only one other than my husband that can take care of him. But of my husband gets sick that won't be good either because he is the only one that works between the two of us. Does anyone know what I can do to help not get sick. I am washing hands and washing bed sheets and cleaning all door handles. Let me know if you have any ideas!!