Infant cold medications are mostly junk and do not work. They are there to make parents feel they're "doing something" but don't really help. A few years back, reports came out that they were either useless, or parents gave kids too much -- very bad. I am not referring to children's ibuprofen (Motrin) or Tylenol products here, since they do work, BUT it is very easy to overdose an infant on them.
Your pediatrician should have a phone number you can call 24/7 for a "triage nurse" who can advise you at any time about any questions you have. Please call your pediatrician's main number and see if there is a 24/7 number. Never, ever give an infant any medication -- even over-the-counter medications! -- without a doctor's specific instruction to do so.
If your pediatrician does not have such a hotline, where you can talk to a real person at any time of day or night, change pediatricians! Any decent one should have this basic service.
Do not be afraid to get a suction bulb (ask for it at the local pharmacy, say it's for sucking snot from an infant) and USE it. Some parents are really scared of these siimple things. But it will really help your baby. Also get a cold steam humidifier -- cold steam, not hot steam, and don't heat up the bathroom with hot steam and take a baby with a fever into it -- that will not be good at all for her fever! You can find cold steam or "cold mist" humidifiers at most any large pharmacy.
I think your husband or SO needs to make a run to the nearest large pharmacy for a snot-sucker bulb and cold mist humidifier while you get on the phone with the pediatrician's office. Good luck. I sense you're probably a first-time mom? Don't let panic take over and don't take advice on medication from anyone other than a doctor!