Advice please

Today at work, one of my colleagues was away for a week and she just came back to the office. I said hi and shock her hands and asked her why was she absent? She said she was taking radtion treatment for her thryoid last week and the dr asked to stay away from people for 7 days. I am worried that 7 days are not enough since I'm 11 weeks pregnant now. Did anyone face the same situation or know any information that can help me???