You realize your girlfriend's reaction is way out of the norm, right? That is to say (not that I recommend putting it this way when you do have that conversation), she's gone a little off-plumb, at least where her risk assessment abilities or lack thereof come into play. Or was she always a little nutty on this topic, as evidenced by the doubling-up of pill plus condoms, which is borderline nutso overkill for birth control purposes (although perfectly rational for disease prophylaxis)?
Look, I have walked through those antiabortion displays. Quite recently I arrived at the restaurant where I was meeting my husband a little pale and shaky from having to walk through two rows of giant, dismembered-fetus posters. They were stationed outside of what I believe was an obstetrician's convention, and I confess I could neither eat nor engage in small talk until the ghastly images, mixed with my anger at the fact that these assaultive theatrics were aimed at doctors who provide essential health care to women, had faded. But, dude, I got my groove back. There is something going on with your girlfriend that cannot easily be laid at the feet of the antichoice brigade, not that it wouldn't give me great pleasure to heap blame upon them.
Suggest that your girlfriend go see a nurse practitioner or someone who can calmly walk her through the actual risks (essentially nonexistent) of condom-wrapped, hormonally blocked intercourse. If that plus taking a different route across campus when the crazies are afoot don't work, well, I hope you like blow jobs. I hear they're quite popular.
Andrea Nemerson has spent the last 14 years as a sex educator and an instructor of sex educators. In her former life, she was a prop designer. Visit www.altsexcolumn.com to view her previous columns.