Hi stroked, welcome to bluelight!
weirdfish is right. Please stop using MDMA like that, it's not a drug you want to abuse as the consequences can be severe, much more severe than with other recreational drugs.
The reason why you feel almost nothing anymore is because you are not giving your serotonin system ample time to recover and recharge. Serotonin is needed for the pleasurable feelings MDMA provides so if your supply of serotonin is low you will hardly feel anything. Furthermore continuous depletion of your serotonin reserves without giving your brain time to replenish has been linked to damage caused in the brain, it's not known yet exactly how harmful it is but you will do damage if you continue like this. MDMA is not a drug you can do weekly, like some others. Take a very long break from it or you will regret it sooner or later