Should I wait or do something?

Last Friday I was face interviewed with one big company I dreamed for years. Felt like I was overqualified for their position but I told HR I was very interested in the position and I did not tell her my current salary ( I guess it is higher than their average for the position). I got laid-off last Nov.
HR told me they need 2 weeks to tell me the final result. I sent the thank you letter to their HR already after interviewed. But since then I didn't get any info. Should I wait or do something? Do you think it is a good idea to write another letter to HR? If yes, what should I say? I felt like if I ask the result directly now, maybe they will think I am a pushing person.
I really really like this company...