Pessary vs Sea Sponge?

Body: 

I am new here, and to prolapse, and am trying to formulate my game plan. I have read mention of using Sea Sponges to hold the uterus up, but cannot find further information. Can anyone tell me more about this or link me? Are Sea Sponges preferable to pessaries? Or are each for different type of prolapse? I have uterine prolapse w/cystocele. I am experiencing stress urinary incontinence, pain in my pubic bone and varicose veins. I would LOVE to get some relief. Any information would be greatly appreciated.