Ok, my girlfriend and I have been seeing each other for about two months now, and we've been putting off the sex till now. She tells me that she is allergic to the spermicide in condoms. Now, she has just started using birth control and we've both been tested for STD's and are both clean. I have always used a rubber even though I hate them, because I can't hardly feel a thing with them on. But she says "no sex with a rubber". Should I go ahead and not use a rubber, will it be safe if she's on birth control?