Thanks, everyone. I feel better this morning. There was definitely enough lubrication, but I guess there is still a friction factor :) . I called my doctor's office and will get checked out anyway.
Just to note that if you are on the pill then it isn't unprotected sex. Maybe it is just from "friction" and irritation from having sex. I would agree that if it persists then see your doctor. Spotting or breakthru bleeding is not uncommon while on BCP so it may be just that. I wouldn't worry to much.
--J
I agree with everyone. My first thought was that you didn't have enough lubrication and it's irriation from sex. Try some KY Jelly if you need to - it's great stuff!
Your cervix could be irritated from having sex..which is common in women. Depending on your arousal, age, etc...can vary the natural lubrication "down there".
If it continues, there is itchiness, pain then go see a doctor
It could be blood left from your period the week before. If it continues you may want to consult a DR.