Hi Debbie,
Our first experience with iv meds was this past fall. Andrew's fev1 went up within just a few days of the meds. His mucus did not get back to "normal", however, until the picc line was out. So, like Lauren mentioned, it can take awhile for the antibiotic to really do its job.
My question, though, is if she seems to be getting worse, or just staying the same. Are the doctors sure they are treating the right bug with the right med? Did they put her on a medication that required levels to be drawn? It would be interesting to know if there was any room for a more agressive dose of the antibiotic.
Please keep us posted on how Cheyenne is progressing, and take care of yourself, too. PICCs are exhausting for moms.