hi madison, its really nice to know that u have got a good observation sense. u have depicted the things like a clinical examination by doctor, its admirable.
with ur history i could say that it is a right sided hard, mobile, pelvic mass. i do't want to put u in distress but it could be a sign for cancerous mass, or it may be a non cancerous mass even. at this point i would like to say that u should get a checkup done from a gynaecologist, as an initial investigation and abdomino-pelvic ultrasound is needed. further investigations will be guided by USG report. i will be ready to answer ur further questions on this.

Hi ! The mass itself you have described signifies that there is an abnormal growth from any of the intra-abdominal organs in your body. As it is noted by you for the last one year, let us presume that possibly it is a benign lesion. However, to be sure and to exclude any thing otherwise, it has to be investigated with advanced radiological modalities ( ultrasound, CT scan and MRI if need be ) after being clinically examined by a surgeon. If on investigations, it comes out to be a pelvic mass from the reproductive organs, then you may have to consult a gynaecologist for further management.
Whatever the management comes out to be, it is better be done at the earliest so that you can have better recovery and prognosis. So consult your doctor/family physician/surgeon at the earliest. Take care and good luck.