To have interaction with your pelvis or to see your pelvis, when you are dreaming, has the symbolic significance about your opinion of opposite gender. Pelvis as the symbol of the dream may suggests sexual difficulties and your sense of masculinity or femininity. Alternatively, this dream may show that you have troubles with creativity. Maybe you need to change something in your surroundings. Also you need to be more expressive.
Read more about dreaming of Pelvis in other dream meanings interpretations.