Combine yogurt, coconut milk and chia seeds in a bowl and stir thoroughly so that chia seeds do not clump. Transfer mixture to a sealable container and refrigerate at least four hours, preferably overnight for chia seeds to thicken. Stir pudding but if the pudding is too thick, stir in a small amount of additional coconut milk. Combine raspberries and sugar in a bowl and mash together with a fork. Using parfait or similar style glasses, spoon an even layer of pudding in the bottom of each glass. Add a layer of raspberries and then spoon additional pudding on top of the raspberry layer. Top with fresh blueberries and serve immediately.