i started with a cold 1 week ago, then for the first time it seems to settle in my nose. got an over the counter sray which advices you to only use it for 3 days, but now that is the only thing that clears my nose,sun day i started an antibiotic, so yesterday the mucus turned yellow. now what do i do. don t have insurance. is there an over the counter i could start taking at this point.