Tantra Sadhana and such experimentation on beeja mantra without the guidance of a Guru are extremely dangerous. Just like self-medication.. it is going to harm you. Revered Guru Achraya Agyaatdarshan says -
क्या खोजत है मानुषो ये तू चारों ओर, वशीकरण इक मंत्र है "तज दे वचन कठोर"
Try this teaching of his and see what changes can happen in your life..
- Ma