If it's not any bigger than it used to be and you can "suck it in", it's not bloat from cancer. It absolutely doesn't sound like ovarian cancer. Oh and wait! You are only 21???? I never even heard of someone that young getting OC! That's for people MY age! And the 3 people I know that have it are ages 53; 57 and 57... that's more of a post menopausal thing, even the people I know were on the YOUNGER side of average! So not only do you not have the symptoms, you are much too young, it would be very rare.