Some of this info may me irrelevant but I want to add it in just incase!

My daughter was born in CA and we lived there until she was about 6 months old. She only got sick once there. She's currently 17 months, will be 18 at the end of the month.

Now we moved to the east and she is sick soooo much! It starts out as a cold and gets really bad. High fevers, vomiting, super stuffed up nose. A few colds ago she has a febrile seizure and while I was told it won't harm her, I never want that happening to my baby again. It's extremely scary. She is currently sick again. Her pediatrician hasn't said anything about it, but we always end with talking to a nurse anyways. Since we've lived here she's been sick probably 8-10 times. Is this normal?