Help please!

Rebecca • Mother of 2 beautiful baby girls. Conceived with PCOS🎀🎀
My baby girl is 4 weeks old and she has had a cough since last week. I took her to the ped and he said he wanted to treat her for acid reflux. I know she was gassy so the possibility of her having reflux is high. However, I know that she has a cold. Dr didn't seem to think so bc that moment when he saw her she wasn't stuffed up. Well the office was like 40 degrees. Anyway her daddy had a little cold and now I'm sick so obvi she is too. Her nose is so stuffy ESP in our bedroom...plus the cough she has.  I don't know why the air is on and we have a humidifier. Anyway she is so stuffy sometimes she snorts. And I use saline and the booger sucker. Is there anything else I can do for my little girl? It's killing me to see her so uncomfortable. I'm just so annoyed the dr couldn't see she was sick. Very annoying.