Hi, doc can you please give me advise how to clean my system from THC after consuming?

You can't. Thc, tetrahydrocannibol, is the main psycho-active ingredient of marijuana. It is a fat-soluble chemical, which means one cigarette's worth of pot will diffuse into all the fatty tissue of the body. That is why drug testing in the urine will be positive for about 1 month after smoking. Sorry, nice try.
THC. You cannot clean your system - your body will have to metabolize the thc. Best is not to consume thc - a recent study in england over a 30 year period found that thc use decreases iq.