ANother thing that might help is experimenting with mic placement.
If you don't have a pop shield Id start with angling the mic down towards your mouth, point it at your nose and let your breath go underneath it. This way the end with the cord will be higher than the end that receives the signal.
Experiment with moving the mic on and off axis (the angle it is pointing at your mouth), and closer and further away from you mouth. I normally set a large diaphragm condenser a hand-span (with fingers splayed) from the mouth of the person singing and tell em not to move too much ! I then mark the position of there feet on the floor with duct tape (I don't ever super-glue their feet though sometimes it is tempting). Also don't ever touch the mic stand !!
Be aware of the proximity effect (the closer to your mouth the mic is the more bass you will pick up)