Visitor Visa - B2

I am 28 yrs old, from Philippines but currently working in China for 6 years now. I had my interview last Wednesday (July 6). The interview went smoothly. The consular officer did not look at my documents and did not ask anything from me. She just checked my old passport and commented that there are a lot of stamps in my passport. (I go home at least once a year. I have traveled to Japan, Thailand, Indonesia and Hong Kong.)

The officer asked me about my job and salary, relatives in the US, relatives in the Philippines, Why China?. After the interview the consular officer took my passport and said they need to do some kind of "check" but did not give me any kind of paper. I was not told that I was approved but she said they're going to email me if they need more documents from me and if I don't hear from them within 4 days then "I'm OK".

It has been 9 days since my interview but there are still no news from them. I checked my status online and still says "Administrative Processing". It has been on AP since July 6. How long do we need to wait under AP (b1/b2) ? It's really frustrating because I want to travel this August. Ticket prices are soaring high. I hope I will get some news soon.

Has anyone experienced the same thing? if so, how long did you have to wait? :(