Don't sell yourself short because you work in geriatrics. It seems like babies and older people have a lot in common. Listen to your gut feelings about your baby.
At daycare, do they hold your baby at an angle when she takes her bottle or do they place her on her back in a crib and let her hold the bottle herself? If a baby is not at a nursing angle when they drink their formula, the fluid can back up into the eustatian tube and cause congestion and infection. Most ear infections should not be treated with antibiotics. They will get better without them. Overuse of antibiotics makes them less effective when you really need them.
If your doctor makes you feel like an idiot, find another doctor. Remember that doctors are not gods, though they'd like you to think they are. They don't have all the answers. If you think your baby has allergies, here are some things to check:
1. Do you use bumper pads in your crib? If you do, what are they made of? Try removing the pads and see if that helps.
2. What are you using to wash her bed clothes? How often do you change the sheets, pads, etc. Dust mites can cause congestion as well as the chemicals in the detergent.
3. My children had to sleep with the head of the crib mattress raised slightly to allow drainage. This may help.
4. What are the floors covered with? What kind of window treatments do you use in her room? Bare floors are better than carpets in the bedroom. Wet mopping to get up dust helps eliminate mites and other allergins.
5. How much time does your daughter spend around the dogs? Animal dander is sometimes a problem for sensitive babies.
6. Check out the accommodations made for your child at daycare. Does she share sleeping/playing equipment with other children? If she does, are the sheets changed between uses? How often are the people disinfecting the play equipment?
7. Do you use scented candles or room fresheners in your home? If you do, remember that these are not good for sensitive people, big or little.
8. Some of the spray fabric fresheners make me sick. Also, some of the room sprays to eliminate germs and odors are offensive and cause congestion.
I hope this helps your baby. My children were so sick their first 6 years of life. They had inhalent allergies as well as allergies to pet dander (dogs and cats) and some food. Their biggest allergy was to tobacco smoke. They each went through desensitization shots for years. Hope none of this applies to your little girl.