Should I take my 3 year old to the ER?

🌼 Ally • Teen mommy ❤

We have already gone to urgent care and he was diagnosed with RSV and actually not the first time he’s had it this winter. He no longer has a fever and hasn’t all day but his cough is so bad he’s thrown up. Idk I’m worried but he is showing signs of improvement so do I need to take him in to the ER and risk him being exposed to other sicknesses or wait it out? What would you do?