My hubby didn't even notice I had the cup in -- during sex, -- it was near the end of my period, maybe because I have it flipped so there are no ridges and no stem. But it got me to thinking..could I use the cup as birthcontrol if I were to fill it with spermicide. My cup sits right around my cervix. Anyway what are your thoughts about this. Perhaps the composition of spermicide would not be compatable with the cup. thanks for your responses.