I believe my baby is already getting sick😭😭

So my husband and I got his 4 year old daughter last weekend and when he got back to our house with her she had a runny nose kept sneezing and watery eyes. Saturday night she woke up and have a fever of 102. We took her back to her moms because she was obviously sick. And the mom text me saying she tested positive for strep and possibly has the flu. I’m pretty pissed that she didn’t tell us she was sick before sending her to us knowing we have a newborn at home. Now my 16 day old keeps coughing sneezing and acts like she’s feeling bad. I’m taking her to the dr Monday to get checked out! Prayers for my babygirl