Front Suspension Issue

[Rebel79]

I have a 2006 x5 3.0 with 75k miles on it. The car rides well but over the last few weeks I have been experiencing a thump under the wheels each time I drive over uneven road surface, particularly at low speeds. I don't hear hissing so doubt its the strut. A local mechanic said to replace lower front control arms with stabilizer links, but I have been doing some research and not sure if its the bushing. Can anyone advise how to diagnose this problem or provide advice? I am in Central NJ so if anyone can recommend a mechanic I would appreciate it. Most of the mechanic are closed on weekends which makes it a challenge to address car troubles.

Thanks in advance for all your assistance.