Helping my neighbor friend

My next door neighbor got admitted to the hospital on Tuesday. She has two kids and none of her family members were able to take care them. My husband and I volunteered to take care of her 2 kids for one night. It was tough for me but I pushed myself to take care of 3 kids(including my daughter). At least the kids behaved well and we did not have any problems. By Wednesday afternoon, their grandma came to pick them up and I was so glad to see her. Both kids were sick so I may have gotten something from them. I hope that it is nothing.... I really do not want to get sick while I'm pregnant! I'm just going to have to drink a lot of water and try to get a lot of rest.