if you have before/currently do, what do you think of it? my boyfriend already use condoms combined with withdrawal but i still get nervous about pregnancy (we're in college), so i really want a non-hormonal, non-invasive added layer of protection and spermicide seems perfect! i've just read some things online about burning and recurrent UTIs after using spermicide, and im wondering if any of you ladies have experienced that? thanks in advance for any advice! :)