sick baby

I took Brynn to her Dr. appt, she was supposed to be going for her 18 months check up, but she has not been feeling well the last few days so, instead of making her another appt I thought that I would wait until her appt for her 18 month check up. Well last night was not a good night, she was having a hard time breathing and would not sleep, so this morning I took her to my mom's while I went to work and then I could take her to the Dr at 1:00, but when we got to my moms she threw up a little, so I called the Dr and they said that we could get her in earlier, I ran to work for about an hour while she fell asleep at my moms, so when we got the the Dr.'s Brynn looked awful, she was way wheezy and coughing, her Dr came in and said that she did not sound good, and her o2 Sat was low, they tested her for RSV and it came back positive and both ears are infected, ahh I felt so bad, they gave her a breathing treatment there, and they sent us home with the machine, she has to have the breathing treatment every four hours until she sounds better
Jentri and Lexie never got RSV so I thought that we were being way lucky, until now. I feel like an awful mom, I hate when my kids are sick, it is the worst. I hope she gets feeling better soon!!