Two months off of hormonal birth control and  hate pulling out so much. We're very good at it, but I want something else. Has anyone used the cervical sponge, FemCap, or natural sea sponge loaded with spermicide as an alternative? I'm skilled and familiar with inserting (I use menstrual cups and check my cervix and cervical fluid daily, as well as teach other women to find their cervix) so not worried about improper insertion.