Make sure that your humidifier is clean. By this I mean washed w/vinegar every week and bleach once per month...otherwise bacteria grows in the humidifier and makes you more sick. (I had to learn this the hard way.) There should be a pamphlet on it or I'm sure you can get the info online.
Stop using the aspirator. All it does is annoy your baby and runs the risk of introducing bacteria into her nasal canal. My pediatrican said to throw the thing out.
Homeopathic remedies like Pulsatilla can work well. Check out a homeopathic pharmacy near by or call a homeopath. Homeopathics are little candy beads that are all natural and have absolutely no side effects. They either work like a charm or not at all. No food or drink 15 minutes before and after taking them and don't touch them with your fingers.
Santa Monica Homeopathic Pharmacy
629 Broadway
Santa Monica, CA 90401
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www.smhomeopathic.com