You're not stupid! You just want what's best for your baby. I use Revolution which is a prescription item. It is applied topically, on the dog's skin between the shoulder blades. I use this because it is a heartworm preventative and flea/tick/worm control as well, all in one product. I have also in the past used Frontline, another topical product that is available over the counter, along with Heartguard heartworm preventative. All of these are monthly treatments. By all means bathe your baby - she will feel a lot better. I would be careful about layering flea products such as spray and collars. They can build up to toxic levels. I have never met a flea collar yet that worked, but I have seen plenty cause neck irritation. I'd stay away from them if I were you. Also - for your flea control to work the best, you need to treat your environment (carpet, yard, etc.). Products that have insect growth regulators are good. Hope this helps!