Just had right and left front wheel bearings replaced on my car.

sounds like the struts are bad push down a few times on one side or the other if it makes the noise you found the problem

possible they did not pack bearings with enough bearing grease or used the wrong type of lube. all wheel bearings require special high speed bearing lube. very specific, other wise its a waste. did you have this done at the dealer ship? gotta remember their focus is more on selling cars, not fixing them. if it is the wheel bearings, noise will get louder, it will start binding, and eventually seize up entirely. of course there is the possibility that the replacement part had some sort of manufacturing defect. if you have to try again, i rec. u use replacement part by napa or a company that specializes in replacement parts.