I concur with gcchahiye on the point that only if you stayed for more than 12 months in a foreign country you would need a PCC of that country but still go ahead an send an email to the consulate where your CP would be processed.
Again since your I-140 is recently filed. I would wait until I-140 is approved if you have to ultimately have to get PCC from that country since certain PCC's are valid for 6 months while others are valid for 12 months...so to play safe apply for it once your I-140 is approved!
Disclaimer: I am not a lawyer. My replies are based on knowledge gained on immigration sites & my studies on US immigration. It is always good to consult an immigration attorney such as Rajiv Khanna. If you have specific questions for me, please PM me.